ID

VAR-200611-0469

CVE

CVE-2006-6127

TITLE

Apple Mac OS X KQueue Local Denial of Service Vulnerability

DESCRIPTION

Apple Mac OS X kernel allows local users to cause a denial of service via a process that uses kevent to register a queue and an event, then fork a child process that uses kevent to register an event for the same queue as the parent. Apple Mac OS X CoreText contains an uninitialized pointer vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system. Exploiting this issue allows local, unprivileged users to crash affected kernels, denying further service to legitimate users. Apple Mac OS X version 10.4.8 is vulnerable to this issue; other versions may also be affected. ---------------------------------------------------------------------- 2003: 2,700 advisories published 2004: 3,100 advisories published 2005: 4,600 advisories published 2006: 5,300 advisories published How do you know which Secunia advisories are important to you? The Secunia Vulnerability Intelligence Solutions allows you to filter and structure all the information you need, so you can address issues effectively. Get a free trial of the Secunia Vulnerability Intelligence Solutions: http://corporate.secunia.com/how_to_buy/38/vi/?ref=secadv ---------------------------------------------------------------------- TITLE: Apple Mac OS X Security Update Fixes Multiple Vulnerabilities SECUNIA ADVISORY ID: SA27643 VERIFY ADVISORY: http://secunia.com/advisories/27643/ CRITICAL: Highly critical IMPACT: Security Bypass, Cross Site Scripting, Spoofing, Exposure of sensitive information, Privilege escalation, DoS, System access WHERE: >From remote OPERATING SYSTEM: Apple Macintosh OS X http://secunia.com/product/96/ DESCRIPTION: Apple has issued a security update for Mac OS X, which fixes multiple vulnerabilities. 1) Multiple errors within the Adobe Flash Player plug-in can be exploited by malicious people to gain knowledge of sensitive information or compromise a user's system. For more information: SA26027 2) A null-pointer dereference error exists within AppleRAID when handling disk images. This can be exploited to cause a system shutdown when a specially crafted disk image is mounted e.g. automatically via Safari if the option "Open 'safe' files after downloading" is enabled. 3) An error in BIND can be exploited by malicious people to poison the DNS cache. For more information: SA26152 4) An error in bzip2 can be exploited to cause a DoS (Denial of Service). For more information: SA15447 This also fixes a race condition when setting file permissions. 5) An unspecified error in the implementation of FTP of CFNetwork can be exploited by a malicious FTP server to cause the client to connect to other hosts by sending specially crafted replies to FTP PASV (passive) commands. 6) An unspecified error exists in the validation of certificates within CFNetwork. This can be exploited via a Man-in-the-Middle (MitM) attack to spoof a web site with a trusted certificate. 7) A null pointer dereference error in the CFNetwork framework can lead to an unexpected application termination when a vulnerable application connects to a malicious server. 8) A boundary error in CoreFoundation can be exploited to cause a one-byte buffer overflow when a user is enticed to read a specially crafted directory hierarchy. Successful exploitation allows execution of arbitrary code. 9) An error exists in CoreText due to the use of an uninitialised pointer and can be exploited to execute arbitrary code when a user is tricked into reading a specially crafted text. 10) Some vulnerabilities in Kerberos can be exploited by malicious users and malicious people to compromise a vulnerable system. For more information: SA26676 11) An error in the handling of the current Mach thread port or thread exception port in the Kernel can be exploited by a malicious, local user to execute arbitrary code with root privileges. Successful exploitation requires permission to execute a setuid binary. 12) An unspecified error in the Kernel can be exploited to bypass the chroot mechanism by changing the working directory using a relative path. 13) An integer overflow error in the "i386_set_ldt" system call can be exploited by malicious, local users to execute arbitrary code with escalated privileges. 14) An error exists in the handling of standard file descriptors while executing setuid and setgid programs. This can be exploited by malicious, local users to gain system privileges by executing setuid programs with the standard file descriptors in an unexpected state. 15) An integer overflow exists in the Kernel when handling ioctl requests. This can be exploited to execute arbitrary code with system privileges by sending a specially crafted ioctl request. 16) The default configuration of tftpd allows clients to access any path on the system. 17) An error in the Node Information Query mechanism may allow a remote user to query for all addresses of a host, including link-local addresses. 18) An integer overflow exists in the handling of ASP messages with AppleTalk. This can be exploited by malicious, local users to cause a heap-based buffer overflow and to execute arbitrary code with system privileges by sending a maliciously crafted ASP message on an AppleTalk socket. 19) A double-free error in the handling of certain IPV6 packets can potentially be exploited to execute arbitrary code with system privileges. 20) A boundary error exists when adding a new AppleTalk zone. This can be exploited to cause a stack-based buffer overflow by sending a maliciously crafted ioctl request to an AppleTalk socket and allows execution of arbitrary code with system privileges. 21) An arithmetic error exists in AppleTalk when handling memory allocations. This can be exploited by malicious, local users to cause a heap-based buffer overflow and execute arbitrary code with system privileges by sending a maliciously crafted AppleTalk message. 22) A double free error in NFS exists when processing an AUTH_UNIX RPC call. This can be exploited by malicious people to execute arbitrary code by sending a maliciously crafted AUTH_UNIX RPC call via TCP or UDP. 23) An unspecified case-sensitivity error exists in NSURL when determining if a URL references the local file system. 24) A format string error in Safari can be exploited by malicious people to execute arbitrary code when a user is tricked into opening a .download file with a specially crafted name. 25) An implementation error exists in the tabbed browsing feature of Safari. If HTTP authentication is used by a site being loaded in a tab other than the active tab, an authentication sheet may be displayed although the tab and its corresponding page are not visible. 26) A person with physical access to a system may be able to bypass the screen saver authentication dialog by sending keystrokes to a process running behind the screen saver authentication dialog. 27) Safari does not block "file://" URLs when loading resources. This can be exploited to view the content of local files by enticing a user to visit a specially crafted web page. 28) An input validation error exists in WebCore when handling HTML forms. This can be exploited to alter the values of form fields by enticing a user to upload a specially crafted file. 29) A race condition error exists in Safari when handling page transitions. This can be exploited to obtain information entered in forms on other web sites by enticing a user to visit a malicious web page. 30) An unspecified error exists in the handling of the browser's history. This can be exploited to execute arbitrary code by enticing a user to visit a specially crafted web page. 31) An error in Safari allows malicious websites to set Javascript window properties of websites served from a different domain. This can be exploited to get or set the window status and location of pages served from other websites by enticing a user to visit a specially crafted web page. 32) An error in Safari allows a malicious website to bypass the same origin policy by hosting embedded objects with javascript URLs. This can be exploited to execute arbitrary HTML and script code in context of another site by enticing a user to visit a specially crafted web page. 33) An error in Safari allows content served over HTTP to alter or access content served over HTTPS in the same domain. This can be exploited to execute Javascript code in context of HTTPS web pages in that domain when a user visits a malicious web page. 34) An error in Safari in the handling of new browser windows can be exploited to disclose the URL of an unrelated page. For more information see vulnerability #2 in: SA23893 35) An error in WebKit may allow unauthorised applications to access private keys added to the keychain by Safari. 36) An unspecified error in Safari may allow a malicious website to send remotely specified data to arbitrary TCP ports. 37) WebKit/Safari creates temporary files insecurely when previewing a PDF file, which may allow a local user to access the file's content. 5) The vendor credits Dr Bob Lopez PhD. 6) The vendor credits Marko Karppinen, Petteri Kamppuri, and Nikita Zhuk of MK&C. 9) Will Dormann, CERT/CC 11) An anonymous person, reported via iDefense Labs. 12) The vendor credits Johan Henselmans and Jesper Skov. 13) The vendor credits RISE Security. 14) The vendor credits Ilja van Sprundel. 15) The vendor credits Tobias Klein, www.trapkit.de 16) The vendor credits James P. Javery, Stratus Data Systems 17) The vendor credits Arnaud Ebalard, EADS Innovation Works. 18, 21) Sean Larsson, iDefense Labs 19) The vendor credits Bhavesh Davda of VMware and Brian "chort" Keefer of Tumbleweed Communications. 20) An anonymous person, reported via iDefense Labs. 22) The vendor credits Alan Newson of NGSSoftware, and Renaud Deraison of Tenable Network Security, Inc. 25) The vendor credits Michael Roitzsch, Technical University Dresden. 26) The vendor credits Faisal N. Jawdat 27) The vendor credits lixlpixel. 28) The vendor credits Bodo Ruskamp, Itchigo Communications GmbH. 29) The vendor credits Ryan Grisso, NetSuite. 30) The vendor credits David Bloom. 31, 32) The vendor credits Michal Zalewski, Google Inc. 33) The vendor credits Keigo Yamazaki of LAC Co. 36) The vendor credits Kostas G. Anagnostakis, Institute for Infocomm Research and Spiros Antonatos, FORTH-ICS 37) The vendor credits Jean-Luc Giraud, and Moritz Borgmann of ETH Zurich. ORIGINAL ADVISORY: Apple: http://docs.info.apple.com/article.html?artnum=307041 US-CERT VU#498105: http://www.kb.cert.org/vuls/id/498105 iDefense Labs: http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=630 http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=629 http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=627 http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=628 OTHER REFERENCES: SA15447: http://secunia.com/advisories/15447/ SA23893: http://secunia.com/advisories/23893/ SA26027: http://secunia.com/advisories/26027/ SA26152: http://secunia.com/advisories/26152/ SA26676: http://secunia.com/advisories/26676/ ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities. Subscribe: http://secunia.com/secunia_security_advisories/ Definitions: (Criticality, Where etc.) http://secunia.com/about_secunia_advisories/ Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor. ---------------------------------------------------------------------- Unsubscribe: Secunia Security Advisories http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org ---------------------------------------------------------------------- . I. Further details are available in the related vulnerability notes. II. Impact The impacts of these vulnerabilities vary. Potential consequences include remote execution of arbitrary code or commands, bypass of security restrictions, and denial of service. III. This and other updates are available via Apple Update or via Apple Downloads. IV. Please send email to <cert@cert.org> with "TA07-319A Feedback VU#498105" in the subject. ____________________________________________________________________ For instructions on subscribing to or unsubscribing from this mailing list, visit <http://www.us-cert.gov/cas/signup.html>. ____________________________________________________________________ Produced 2007 by US-CERT, a government organization. Terms of use: <http://www.us-cert.gov/legal.html> ____________________________________________________________________ Revision History November 15, 2007: Initial release -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iQEVAwUBRzx7ZvRFkHkM87XOAQJfIQgAmTZfjJAY/QTweUmvZtOJ9JQ4e/Gj0sE9 OPSrK/SplP92WUL1Ucb8I/VUSQEXXJhNv9dTCMcy7IMpqhx4UxPA6fBKWDJ+nUFi sx/60EOAiIVW+yYK79VdoI1jrSs48E+CNdqEJCQcjUCVi29eGAdW63H2jOZV37/F 4iQBZYRqhiycZ9FS+S+9aRfMhfy8dEOr1UwIElq6X/tSwss1EKFSNrK5ktGifUtB AJ+LJVBt2yZOIApcGhsxC3LYUDrDfhqGLIVM2XBc1yuV7Y2gaH4g9Txe+fWK79X2 LYHvhv2xtgLweR12YC+0hT60wSdrDTM6ZW0//ny25LZ7Y7D46ogSWQ== =AgEr -----END PGP SIGNATURE-----

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

TYPE

other

CONFIGURATIONS

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

LMH lmh@info-pull.com Kevin Finisterre dotslash@snosoft.com

SOURCES

LAST UPDATE DATE

2024-08-14T12:12:16.950000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE