ID

VAR-201110-0288

CVE

CVE-2011-3426

TITLE

Safari for iOS vulnerable to cross-site scripting

DESCRIPTION

Cross-site scripting (XSS) vulnerability in Safari in Apple iOS before 5 allows remote web servers to inject arbitrary web script or HTML via a file accompanied by a "Content-Disposition: attachment" HTTP header. Yoshinori Ohta of Business Architects Inc. reported this vulnerability to IPA. JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.Opening a maliciously crafted file may lead to an arbitrary script being executed on the user's web browser. An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of another site. This may help the attacker steal cookie-based authentication credentials and launch other attacks. NOTE: This issue was previously discussed in BID 50086 (Apple iPhone/iPad/iPod touch Prior to iOS 5 Multiple Vulnerabilities) but has been given its own record to better document it. ---------------------------------------------------------------------- Ovum says ad hoc tools are out-dated. The best practice approach? Fast vulnerability intelligence, threat handling, and setup in one tool. Read the new report on the Secunia VIM: http://secunia.com/products/corporate/vim/ovum_2011_request/ ---------------------------------------------------------------------- TITLE: Apple iOS Multiple Vulnerabilities SECUNIA ADVISORY ID: SA46377 VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/46377/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=46377 RELEASE DATE: 2011-10-14 DISCUSS ADVISORY: http://secunia.com/advisories/46377/#comments AVAILABLE ON SITE AND IN CUSTOMER AREA: * Last Update * Popularity * Comments * Criticality Level * Impact * Where * Solution Status * Operating System / Software * CVE Reference(s) http://secunia.com/advisories/46377/ ONLY AVAILABLE IN CUSTOMER AREA: * Authentication Level * Report Reliability * Secunia PoC * Secunia Analysis * Systems Affected * Approve Distribution * Remediation Status * Secunia CVSS Score * CVSS https://ca.secunia.com/?page=viewadvisory&vuln_id=46377 ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI: * AUTOMATED SCANNING http://secunia.com/vulnerability_scanning/personal/ http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/ DESCRIPTION: Multiple vulnerabilities have been reported in Apple iOS, which can be exploited by malicious people with physical access to disclose certain information and by malicious people to conduct script insertion, cross-site scripting, and spoofing attacks, disclose sensitive information, bypass certain security restrictions, cause a DoS (Denial of Service), and compromise a user's device. 1) An error within the CalDAV component does not properly validate the SSL certificate when synchronizing the calendar, which can be exploited to disclose encrypted information e.g. using a Man-in-the-Middle (MitM) attack. 2) Input passed via invitation notes is not properly sanitised in Calendar before being returned to the user. 3) The CFNetwork component stores a user's AppleID password and username in the log file readable by applications, which can be exploited to disclose the credentials. 4) The CFNetwork component does not properly restrict cross-domain access of HTTP cookies, which can be exploited to access the cookies of another web site. 5) An error exists within CoreFoundation when handling string tokenization. For more information see vulnerability #1 in: SA46339 6) Multiple errors within CoreGraphics when handling the certain freetype fonts can be exploited to corrupt memory. 7) An error within CoreMedia does not properly handle cross-site redirects and can be exploited to disclose video data. 8) An error exits within the Data Access component when handling multiple accounts configured on the same server and can be exploited to disclose the cookie of another account. 9) The application accepts X.509 certificates with MD5 hashes, which could lead to weak cryptographic certificates being used. This can be exploited to disclose encrypted information e.g. using a Man-in-the-Middle (MitM) attack. 10) A design error exists within the implementation of SSL 3.0 and TLS 1.0 protocols. For more information: SA46168 11) An error within ImageIO when handling CCITT Group 4 encoded TIFF files can be exploited to cause a buffer overflow. For more information see vulnerability #1 in: SA43593 12) An error in ImageIO within the handling of CCITT Group 4 encoded TIFF image files can be exploited to cause a heap-based buffer overflow. For more information see vulnerability #9 in: SA45325 13) An error within ICU (International Components for Unicode) can be exploited to cause a buffer overflow. For more information see vulnerability #11 in: SA45054 14) An error within the kernel does not reclaim memory from incomplete TCP connections, which can be exploited to exhaust system resources by connecting to a listening service and cause the device to reset. 15) A NULL-pointer dereference error within the kernel when handling IPv6 socket options can be exploited to cause the device to reset. 16) An error within libxml can be exploited to cause a heap-based buffer overflow. For more information see vulnerability #12 in: SA45325 17) An error within OfficeImport when viewing certain Microsoft Word files can be exploited to cause a buffer overflow. 18) An error within OfficeImport when viewing certain Microsoft Excel files can be exploited to cause a buffer overflow. 19) An indexing error exists in the OfficeImport framework when processing certain records in a Microsoft Word file. For more information see vulnerability #19 in: SA45054 20) An error in the OfficeImport framework when processing records can be exploited to corrupt memory. 22) The parental restrictions feature stores the restrictions passcode in plaintext on disk and can be exploited to disclose the passcode. 23) An error within UIKit does not properly handle "tel:" URIs and can be exploited to cause the device to hang by tricking the user into visiting a malicious website. 24) Some vulnerabilities are caused due to a bundled vulnerable version of WebKit. For more information: SA43519 SA43683 SA43696 SA43859 SA45097 SA45325 SA45325 SA45498 SA45498 SA46339 SA46412 25) The WiFi credentials are stored in a file readable by other applications, which may lead to the credentials being disclosed. Successful exploitation of vulnerabilities #6, #16 \x96 #20, and #24 may allow execution of arbitrary code. SOLUTION: Apply iOS 5 Software Update. PROVIDED AND/OR DISCOVERED BY: 1) Leszek Tasiemski, nSense. 6, 9) Reported by the vendor. The vendor credits: 2) Rick Deacon 3) Peter Quade, qdevelop 4) Erling Ellingsen, Facebook. 7) Nirankush Panchbhai and Microsoft Vulnerability Research (MSVR) 8) Bob Sielken, IBM 14) Wouter van der Veer, Topicus and Josh Enders 15) Thomas Clement, Intego 17) Tobias Klein via iDefense. 22) An anonymous person 23) Simon Young, Anglia Ruskin University 25) Laurent OUDOT, TEHTRI Security ORIGINAL ADVISORY: Apple: http://support.apple.com/kb/HT4999 nSense: http://www.nsense.fi/advisories/nsense_2011_006.txt OTHER REFERENCES: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/ DEEP LINKS: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/ EXTENDED DESCRIPTION: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/ EXTENDED SOLUTION: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/ EXPLOIT: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/ ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help private users keeping their systems up to date against the latest vulnerabilities. Subscribe: http://secunia.com/advisories/secunia_security_advisories/ Definitions: (Criticality, Where etc.) http://secunia.com/advisories/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 ---------------------------------------------------------------------- . BACKGROUND MobileSafari is Apple's mobile we browser for iOS devices. For more information about MobileSafari, please the visit following website: http://www.apple.com/iphone/built-in-apps/safari.html II. DESCRIPTION Remote exploitation of a cross site scripting vulnerability in Apple Inc.'s MobileSafari could allow an attacker to view sensitive information in the context of the targeted domain. This vulnerability occurs in MobileSafari's handling of the Content-Disposition header, which is typically used to inform the browser that an attachment is contained in the current response. Typical browser behavior is to prompt the user with an Open dialog, asking them how they would like to handle the attachment content (such as opening an external program). However, MobileSafari does not prompt the user, and instead opens the attached content in the browser. If an attacker can persuade a target to open an HTML attachment (such as by attaching an HTML file to an email), then this file will open in the context of the domain serving the file. This allows the HTML attachment full access to the DOM of the targeted domain, which can allow for cross site scripting. III. ANALYSIS Exploitation of this vulnerability results in the disclosure of potentially sensitive information, such as document cookies, on the target domain. To exploit this vulnerability, a targeted user must open an attachment from an affected domain. An attacker typically accomplishes this via social engineering or injecting content into compromised, trusted sites. Note that a user has to open an attachment, which takes at least one click; however, MobileSafari does not display an "Open" prompt dialog, so nothing beyond the initial click is necessary. IV. DETECTION iOS versions prior to 5 are vulnerable. V. WORKAROUND iDefense is currently unaware of any workarounds for this issue. VI. VENDOR RESPONSE Apple has released a fix which addresses this issue. Information about downloadable vendor updates can be found by clicking on the URLs shown. http://lists.apple.com/archives/Security-announce/2011/Oct/msg00001.html VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2011-3426 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org/), which standardizes names for security problems. VIII. DISCLOSURE TIMELINE 03/02/2011 Initial Vendor Notification 03/02/2011 Vendor Reply 10/12/2011 Coordinated Public Disclosure IX. Get paid for vulnerability research http://labs.idefense.com/methodology/vulnerability/vcp.php Free tools, research and upcoming events http://labs.idefense.com/ X. LEGAL NOTICES Copyright © 2011 Verisign Permission is granted for the redistribution of this alert electronically. It may not be edited in any way without the express written consent of iDefense. If you wish to reprint the whole or any part of this alert in any other medium other than electronically, please e-mail customerservice@idefense.com for permission. Disclaimer: The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

xss

CONFIGURATIONS

EXPLOIT AVAILABILITY

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Christian Matthies

SOURCES

LAST UPDATE DATE

2024-11-23T21:14:58.110000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE