VARIoT IoT vulnerabilities database

Microsoft IIS 4.0 and 5.0 with the IISADMPWD virtual directory installed allows a remote attacker to cause a denial of service via a malformed request to the inetinfo.exe program, aka the "Undelimited .HTR Request" vulnerability. The virtual directory within IIS 4.0 and 5.0 contains .htr files which permits users to change passwords remotely. If a user initiates a password change request containing malformed data, the server CPU becomes fully utilized until the administrator performs a reboot to regain normal functionality. The patch available for this issue creates a similar vulnerability which is exploited by appending %3F+.htr to a request

NetStructure 7110 and 7180 have undocumented accounts (servnow, root, and wizard) whose passwords are easily guessable from the NetStructure's MAC address, which could allow remote attackers to gain root access. NetStructure (formerly known as Ipivot Commerce Accelerator) is a multi-site traffic director. This internet equipment is designed for businesses with multiple Web site locations, routing traffic to the best available site from a single URL. Certain revisions of this package have an undocumented supervisor password. This password, which grants access to the 'wizard' mode of the device, is derived from the MAC address of the primary NIC. This MAC address is displayed in the login banner. This password can be utilized from the admin console locally (via a serial interface) or remotely if the machine has been deployed with a modem for remote access. With this password an intruder gains shell access to the underlying UNIX system and may sniff traffic, among other things. These passwords are derived from is the ethernet address of the public interface which under default installs is available via a default passworded SNMP daemon. It should be noted that configuration over telnet is preferred in the user documentation. NetStructure 7110 and 7180 have undisclosed accounts (servnow, root, and wizard). Remote attackers can use this vulnerability to obtain root user privileges

The shtml.exe program in the FrontPage extensions package of IIS 4.0 and 5.0 allows remote attackers to determine the physical path of HTML, HTM, ASP, and SHTML files by requesting a file that does not exist, which generates an error message that reveals the path. Passing a path to a non-existent file to the shtml.exe or shtml.dll (depending on platform) program will display an error message stating that the file cannot be found accompanied by the full local path to the web root. For example, performing a request for http://target/_vti_bin/shtml.dll/non_existant_file.html will produce an error message stating "Cannot open "C:\localpath\non_existant_file.html": no such file or folder"

The on-line help system options in Cisco routers allows non-privileged users without "enabled" access to obtain sensitive information via the show command. This information is comprised of access lists among other things. The help system itself does not list these items as being available via the 'show' commands yet none the less it will execute them. The message which detailed this vulnerability to the Bugtraq mailing list is attached in the 'Credit' section of this vulnerability entry. It is suggested that you read it if this vulnerability affects your infrastructure

AppleShare IP 6.1 and later allows a remote attacker to read potentially sensitive information via an invalid range request to the web server. The additional data will appear appended to the file requested and may contain sensitive information

The IOS HTTP service in Cisco routers and switches running IOS 11.1 through 12.1 allows remote attackers to cause a denial of service by requesting a URL that contains a %% string. There is a denial-of-service vulnerability in several Cisco switch and router products which allows an attacker to force affected devices to crash and reboot. If the router is configured to have a web server running for configuration and other information a user can cause the router to crash. Cisco IOS is an operating system that runs widely on various network devices of the Cisco system. Remote attackers may use this loophole to carry out denial of service attacks on the device. Some routers will automatically restart, while others must be manually powered off and on to restore the router to normal operation

The web mail functionality in Usermin 1.x and Webmin 1.x allows remote attackers to execute arbitrary commands via shell metacharacters in an e-mail message. Usermin Is Web The module that sends and receives emails via the interface is incomplete and received HTML Another in the email Usermin A vulnerability exists that does not properly remove links to modules.An arbitrary command may be executed with the authority of the user who received and viewed the email. Webmin / Usermin are reportedly affected by a command execution vulnerability when rendering HTML email messages. This issue is reported to affect Usermin versions 1.080 and prior. Under certain versions of the Cisco Catalyst a user who already has access to the device can elevate their current access to 'enable' mode without a password. Once 'enable' mode is obtained the user can access the configuration mode and commit unauthorized configuration changes on a Catalyst switch. This can be done either from the console itself or via a remote Telnet session

Cisco IOS 11.x and 12.x allows remote attackers to cause a denial of service by sending the ENVIRON option to the Telnet daemon before it is ready to accept it, which causes the system to reboot. Certain versions of Cisco's IOS software have a vulnerability in the Telnet Environment handling code. This attack can be launched repeatedly thereby effecting a Denial of Service attack. Cisco Internet Operating System (IOS) is an operating system used on CISCO routers. < *Link: http://www.cisco.com/warp/public/707/iostelnetopt-pub.shtml* >

Cisco Catalyst 5.4.x allows a user to gain access to the "enable" mode without a password. This can be done either from the console itself or via a remote Telnet session

IIS 4.0 and 5.0 allows remote attackers to cause a denial of service by sending many URLs with a large number of escaped characters, aka the "Myriad Escaped Characters" Vulnerability. Requesting a malformed URL containing numerous escaped characters will cause Microsoft IIS performance to dramatically decrease until the URL has been processed

Ipswitch IMAIL server 6.02 and earlier allows remote attackers to cause a denial of service via the AUTH CRAM-MD5 command. Due to the implementation of IMail's authentication scheme, the server could be remotely forced to stop responding to login requests. If the client fails to terminate the connection, IMail will not be able to authenticate any other users due to the fact that it can only authorize one user at a time. Once the client times out the connection, IMail will regain normal functionality. Otherwise the service will have to be restarted

Buffer overflow in WebObjects.exe in the WebObjects Developer 4.5 package allows remote attackers to cause a denial of service via an HTTP request with long headers such as Accept. apple's WebObjects Exists in unspecified vulnerabilities.None. A denial-of-service vulnerability exists in Apple's WebObjects 4.5 Developer, a popular platform for developing web-based applications. The vulnerable version is Windows NT 4.0 SP5, when run in conjunction with the CGI-adapter and IIS 4.0. An HTTP request sent with a long header (ie, over 4.1K), will crash webobjects.exe. This may also permit the attacker to remotely execute code with the privilege of IIS, but this has not been verified. This vulnerability is reportedly present only in installations running under a development license. Those licensed for deployment are not affected

IIS 4.0 and 5.0 does not properly perform ISAPI extension processing if a virtual directory is mapped to a UNC share, which allows remote attackers to read the source code of ASP and other files, aka the "Virtualized UNC Share" vulnerability. Files located on the local drive where IIS is installed is not affected by this vulnerability

Cisco Secure PIX Firewall does not properly identify forged TCP Reset (RST) packets, which allows remote attackers to force the firewall to close legitimate connections. The attacker would have to possess detailed knowledge of the connection table in the firewall (which is used to track outgoing connections and disallow any connections from the external network that were not initiated by an internal machine) or be able to otherwise determine the required IP address and port information to exploit this

IIS 4.0 allows attackers to cause a denial of service by requesting a large buffer in a POST or PUT command which consumes memory, aka the "Chunked Transfer Encoding Buffer Overflow Vulnerability.". Microsoft IIS 4.0, circa March 2000, contained a vulnerability that allowed an intruder to consume unlimited memory on a vulnerable server. Due to unchecked buffer code that handles chunked encoding transfers, remote users are able to consume CPU cycles in Microsoft IIS until the program is rendered completely unstable and eventually crash. This can cause the server to hang indefinitely until the remote user cancels the session or until the IIS service is stopped and restarted

Buffer overflow in the web server for Norton AntiVirus for Internet Email Gateways allows remote attackers to cause a denial of service via a long URL. Due to unchecked buffer code, the program will crash causing a Dr. Watson error when a URL consisting of a large number of characters is requested

Firewall-1 3.0 and 4.0 leaks packets with private IP address information, which could allow remote attackers to determine the real IP address of the host that is making the connection. A vulnerability exists in which Checkpoint Firewall-1 will expose internal addresses to machines outside the network. Under seemingly normal load conditions, according to the poster of this vulnerability, 40% CPU utilization with 200+ active connections, Firewall-1 will attempt to establish connections utilizing the internal address. As this address is either non-routable, or internal, a retransmission will occur; this packet will have the correct address rewritten, but will use the same source port. This may be particularly useful to attackers conducting client side attacks. These problems have been seen on both NT and Solaris versions of FW-1, although the poster indicated that not enough data was available to directly state the Solaris version was vulnerable in the same ways, or to the same degrees

Buffer overflow in SGI Omron WorldView Wnn allows remote attackers to execute arbitrary commands via long JS_OPEN, JS_MKDIR, or JS_FILE_INFO commands. A remote buffer overflow exists in the Asian language servers portion of a number of different implementations of Wnn. It has been reported that only systems that have WorldView Japanese, Korean, and Chinese installed are vulnerable to this issue. Wnn is a Kana-Kanji translation system, most commonly used for foreign language support in Unix systems. An overflow exists when the server receives a long string with a Wnn command, such as JS_OPEN, JS_MKDIR or JS_FILE_INFO included. By creating a buffer containing machine executable code, it is possible to cause a remote system running the jserver daemon to execute arbitrary commands as the user the daemon is running as. This is frequently root. It is a server-client application, and the Jserver part acts as the server side, providing translation services for clients. Some versions of Wnn have a remote buffer overflow vulnerability. Carefully constructed strings leading to overflows have the potential to execute arbitrary commands with privileges owned by the Jserver, usually root

The window.showHelp() method in Internet Explorer 5.x does not restrict HTML help files (.chm) to be executed from the local host, which allows remote attackers to execute arbitrary commands via Microsoft Networking. Versions of the OpenSSH server prior to 3.7.1 contain buffer management errors. While the full impact of these vulnerabilities are unclear, they may lead to memory corruption and a denial-of-service situation. A vulnerability exists in Microsoft's Remote Procedure Call (RPC) implementation. A remote attacker could exploit this vulnerability to cause a denial of service. An exploit for this vulnerability is publicly available. There is a remote buffer overflow in many versions of Microsoft Windows that allows attackers to execute arbitrary code with system privileges. We are sending this message to help ensure that administrators have not overlooked one or more of these vulnerabilities. There have been several recent vulnerabilities affecting OpenSSH. It is unclear if these issues are exploitable, but they are resolved in version 3.7.1. These four additional flaws are believed to be relatively minor, and are scheduled to be included in the next version of OpenSSH. Exploitation of this vulnerability may lead to a remote attacker gaining privileged access to the server, in some cases root access. VU#209807 - Portable OpenSSH server PAM conversion stack corruption http://www.kb.cert.org/vuls/id/209807 There is a vulnerability in portable versions of OpenSSH 3.7p1 and 3.7.1p1 that may permit an attacker to corrupt the PAM conversion stack. Please check the vulnerability notes for resolutions and additional details. Thank you. -----BEGIN PGP SIGNED MESSAGE----- CERT Summary CS-2003-04 November 24, 2003 Each quarter, the CERT Coordination Center (CERT/CC) issues the CERT Summary to draw attention to the types of attacks reported to our incident response team, as well as other noteworthy incident and vulnerability information. The summary includes pointers to sources of information for dealing with the problems. Past CERT summaries are available from: CERT Summaries http://www.cert.org/summaries/ ______________________________________________________________________ Recent Activity Since the last regularly scheduled CERT summary, issued in September 2003 (CS-2003-03), we have documented vulnerabilities in the Microsoft Windows Workstation Service, RPCSS Service, and Exchange. We have received reports of W32/Swen.A, W32/Mimail variants, and exploitation of an Internet Explorer vulnerability reported in August of 2003. For more current information on activity being reported to the CERT/CC, please visit the CERT/CC Current Activity page. The Current Activity page is a regularly updated summary of the most frequent, high-impact types of security incidents and vulnerabilities being reported to the CERT/CC. The information on the Current Activity page is reviewed and updated as reporting trends change. CERT/CC Current Activity http://www.cert.org/current/current_activity.html 1. W32/Mimail Variants The CERT/CC has received reports of several new variants of the 'Mimail' worm. The most recent variant of the worm (W32/Mimail.J) arrives as an email message alleging to be from the Paypal financial service. The message requests that the recipient 'verify' their account information to prevent the suspension of their Paypal account. Attached to the email is an executable file which captures this information (if entered), and sends it to a number of email addresses. Current Activity - November 19, 2003 http://www.cert.org/current/archive/2003/11/19/archive.html#mimaili 2. CERT Advisory CA-2003-28 Buffer Overflow in Windows Workstation Service http://www.cert.org/advisories/CA-2003-28.html Vulnerability Note VU#567620 Microsoft Windows Workstation service vulnerable to buffer overflow when sent specially crafted network message http://www.kb.cert.org/vuls/id/567620 3. CERT Advisory CA-2003-27 Multiple Vulnerabilities in Microsoft Windows and Exchange http://www.cert.org/advisories/CA-2003-27.html Vulnerability Note VU#575892 Buffer overflow in Microsoft Windows Messenger Service http://www.kb.cert.org/vuls/id/575892 Vulnerability Note VU#422156 Microsoft Exchange Server fails to properly handle specially crafted SMTP extended verb requests http://www.kb.cert.org/vuls/id/422156 Vulnerability Note VU#467036 Microsoft Windows Help and support Center contains buffer overflow in code used to handle HCP protocol http://www.kb.cert.org/vuls/id/467036 Vulnerability Note VU#989932 Microsoft Windows contains buffer overflow in Local Troubleshooter ActiveX control (Tshoot.ocx) http://www.kb.cert.org/vuls/id/989932 Vulnerability Note VU#838572 Microsoft Windows Authenticode mechanism installs ActiveX controls without prompting user http://www.kb.cert.org/vuls/id/838572 Vulnerability Note VU#435444 Microsoft Outlook Web Access (OWA) contains cross-site scripting vulnerability in the "Compose New Message" form http://www.kb.cert.org/vuls/id/435444 Vulnerability Note VU#967668 Microsoft Windows ListBox and ComboBox controls vulnerable to buffer overflow when supplied crafted Windows message http://www.kb.cert.org/vuls/id/967668 4. Multiple Vulnerabilities in SSL/TLS Implementations Multiple vulnerabilities exist in the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols allowing an attacker to execute arbitrary code or cause a denial-of-service condition. CERT Advisory CA-2003-26 Multiple Vulnerabilities in SSL/TLS Implementations http://www.cert.org/advisories/CA-2003-26.html Vulnerability Note VU#935264 OpenSSL ASN.1 parser insecure memory deallocation http://www.kb.cert.org/vuls/id/935264 Vulnerability Note VU#255484 OpenSSL contains integer overflow handling ASN.1 tags (1) http://www.kb.cert.org/vuls/id/255484 Vulnerability Note VU#380864 OpenSSL contains integer overflow handling ASN.1 tags (2) http://www.kb.cert.org/vuls/id/380864 Vulnerability Note VU#686224 OpenSSL does not securely handle invalid public key when configured to ignore errors http://www.kb.cert.org/vuls/id/686224 Vulnerability Note VU#732952 OpenSSL accepts unsolicited client certificate messages http://www.kb.cert.org/vuls/id/732952 Vulnerability Note VU#104280 Multiple vulnerabilities in SSL/TLS implementations http://www.kb.cert.org/vuls/id/104280 Vulnerability Note VU#412478 OpenSSL 0.9.6k does not properly handle ASN.1 sequences http://www.kb.cert.org/vuls/id/412478 5. Exploitation of Internet Explorer Vulnerability The CERT/CC received a number of reports indicating that attackers were actively exploiting the Microsoft Internet Explorer vulnerability described in VU#865940. These attacks include the installation of tools for launching distributed denial-of-service (DDoS) attacks, providing generic proxy services, reading sensitive information from the Windows registry, and using a victim system's modem to dial pay-per-minute services. The vulnerability described in VU#865940 exists due to an interaction between IE's MIME type processing and the way it handles HTML application (HTA) files embedded in OBJECT tags. CERT Advisory IN-2003-04 Exploitation of Internet Explorer Vulnerability http://www.cert.org/incident_notes/IN-2003-04.html Vulnerability Note VU#865940 Microsoft Internet Explorer does not properly evaluate "application/hta" MIME type referenced by DATA attribute of OBJECT element http://www.kb.cert.org/vuls/id/865940 6. W32/Swen.A Worm On September 19, the CERT/CC began receiving a large volume of reports of a mass mailing worm, referred to as W32/Swen.A, spreading on the Internet. Similar to W32/Gibe.B in function, this worm arrives as an attachment claiming to be a Microsoft Internet Explorer Update or a delivery failure notice from qmail. The W32/Swen.A worm requires a user to execute the attachment either manually or by using an email client that will open the attachment automatically. Upon opening the attachment, the worm attempts to mail itself to all email addresses it finds on the system. The CERT/CC updated the current activity page to contain further information on this worm. Current Activity - September 19, 2003 http://www.cert.org/current/archive/2003/09/19/archive.html#swena 7. Buffer Overflow in Sendmail Sendmail, a widely deployed mail transfer agent (MTA), contains a vulnerability that could allow an attacker to execute arbitrary code with the privileges of the sendmail daemon, typically root. CERT Advisory CA-2003-25 Buffer Overflow in Sendmail http://www.cert.org/advisories/CA-2003-25.html Vulnerability Note VU#784980 Sendmail prescan() buffer overflow vulnerability http://www.kb.cert.org/vuls/id/784980 8. CERT Advisory CA-2003-23 RPCSS Vulnerabilities in Microsoft Windows http://www.cert.org/advisories/CA-2003-23.html Vulnerability Note VU#483492 Microsoft Windows RPCSS Service contains heap overflow in DCOM activation routines http://www.kb.cert.org/vuls/id/483492 Vulnerability Note VU#254236 Microsoft Windows RPCSS Service contains heap overflow in DCOM request filename handling http://www.kb.cert.org/vuls/id/254236 Vulnerability Note VU#326746 Microsoft Windows RPC service vulnerable to denial of service http://www.kb.cert.org/vuls/id/326746 ______________________________________________________________________ New CERT Coordination Center (CERT/CC) PGP Key On October 15, the CERT/CC issued a new PGP key, which should be used when sending sensitive information to the CERT/CC. CERT/CC PGP Public Key https://www.cert.org/pgp/cert_pgp_key.asc Sending Sensitive Information to the CERT/CC https://www.cert.org/contact_cert/encryptmail.html ______________________________________________________________________ What's New and Updated Since the last CERT Summary, we have published new and updated * Advisories http://www.cert.org/advisories/ * Vulnerability Notes http://www.kb.cert.org/vuls * CERT/CC Statistics http://www.cert.org/stats/cert_stats.html * Congressional Testimony http://www.cert.org/congressional_testimony * Training Schedule http://www.cert.org/training/ * CSIRT Development http://www.cert.org/csirts/ ______________________________________________________________________ This document is available from: http://www.cert.org/summaries/CS-2003-04.html ______________________________________________________________________ CERT/CC Contact Information Email: cert@cert.org Phone: +1 412-268-7090 (24-hour hotline) Fax: +1 412-268-6989 Postal address: CERT Coordination Center Software Engineering Institute Carnegie Mellon University Pittsburgh PA 15213-3890 U.S.A. CERT/CC personnel answer the hotline 08:00-17:00 EST(GMT-5) / EDT(GMT-4) Monday through Friday; they are on call for emergencies during other hours, on U.S. holidays, and on weekends. Using encryption We strongly urge you to encrypt sensitive information sent by email. Our public PGP key is available from http://www.cert.org/CERT_PGP.key If you prefer to use DES, please call the CERT hotline for more information. Getting security information CERT publications and other security information are available from our web site http://www.cert.org/ To subscribe to the CERT mailing list for advisories and bulletins, send email to majordomo@cert.org. Please include in the body of your message subscribe cert-advisory * "CERT" and "CERT Coordination Center" are registered in the U.S. Patent and Trademark Office. ______________________________________________________________________ NO WARRANTY Any material furnished by Carnegie Mellon University and the Software Engineering Institute is furnished on an "as is" basis. Carnegie Mellon University makes no warranties of any kind, either expressed or implied as to any matter including, but not limited to, warranty of fitness for a particular purpose or merchantability, exclusivity or results obtained from use of the material. Carnegie Mellon University does not make any warranty of any kind with respect to freedom from patent, trademark, or copyright infringement. ______________________________________________________________________ Conditions for use, disclaimers, and sponsorship information Copyright \xa92003 Carnegie Mellon University. -----BEGIN PGP SIGNATURE----- Version: PGP 6.5.8 iQCVAwUBP8JVOZZ2NNT/dVAVAQGL9wP+I18NJBUBuv7b0pam5La7E7qOQFMn5n78 7i0gBX/dKgaY5siM6jBYYwCbbA7Y0/Jwtby2zHp1s8RHZY5/3JEzElfv4TLlR8rT rb8gJDbpan2JWA6xH9IzqZaSrxrXpNypwU2wWxR2osmbYl8FdV0rD3ZYXJjyi+nU UENALuNdthA= =DD60 -----END PGP SIGNATURE-----

In a number of network devices/operating systems, some default communites are world-writeable and therefore allow remote users to configure properties of the device/OS without any authorization (other than knowledge of the community name). Some of the common default communities/vendors are: public (ascend,cisco,bay networks (nortel),microsoft,sun,3com, aix) private (cisco,bay networks (nortel),microsoft,3com, brocade, aix, netapp) write (ascend, very common) "all private" (sun) monitor (3com) manager (3com) security (3com) OrigEquipMfr (brocade) "Secret C0de" (brocade) admin default password tivoli openview community snmp snmpd system (aix, others) the name of the router (ie, 'gate') The attacks can include manipulating routing tables and corrupting ARP caches, which can lead to further compromise. This type of vulnerability has been seen for quite some time; more information on it is listed in the credit section. NOTE: There may be more products shipping with default read/writeable communities. If you have any more information on what may be vulnerable (more specific firmware versions or corrections), email &lt;vuldb@securityfocus.com&gt;.