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Apple iOS Multiple Vulnerabilities
Date: Tuesday, November 23, 2010 @ 19:33:43 PST
Topic: Security



SECUNIA ADVISORY ID: SA42312

VERIFY ADVISORY: Secunia.com: http://secunia.com/advisories/42312/

RELEASE DATE: 2010-11-23

CRITICALITY: Highly Critical

DESCRIPTION: Multiple vulnerabilities have been reported in Apple iOS, which can be exploited by malicious people bypass certain security restrictions, conduct spoofing attacks, disclose sensitive information, cause a DoS (Denial of Service), or to compromise a user's system.



1) An error in the signature validation when handling configuration profiles can result in a specially crafted, malicious configuration profile appearing to have a valid signature.

2) Multiple vulnerabilities in FreeType can be exploited by malicious people to potentially compromise an application using the library. For more information: SA34723, SA40586, SA40816, SA41738

3) An error in iAd Content Display in the handling of certain URL schemes can be exploited to initiate a call without user interaction. Successful exploitation of this vulnerability requires manipulation of a response for a requested ad.

4) Two vulnerabilities in libpng can be exploited by malicious people to potentially compromise an application using the library. For more information: SA40302

5) An error in libxml can be exploited to potentially compromise an application using the library. For more information: SA42175

6) An weakness in Mail can be exploited to trigger DNS prefetching even if remote image loading is disabled.

7) A vulnerability in Networking can be exploited to cause system shutdown. For more information: SA42151

8) An invalid pointer reference error in Networking when handling packet filter rules can be exploited to gain system privileges.

9) An error in the Photos application can be exploited to disclose the MobileMe account password. Successful exploitation requires the attacker to manipulate a response of the MobileMe Gallery requesting basic authentication.

10) A weakness is caused due to the "Reset Safari" feature taking up to 30 seconds to clear the website passwords from memory.

11) A boundary error in the handling of Temporary Mobile Subscriber Identity (TMSI) fields in GSM mobility management can be exploited to cause a heap-based buffer overflow and execute arbitrary code on the baseband processor.

12) Multiple vulnerabilities in WebKit can be exploited by malicious people to compromise a user's system. For more information: SA40664, SA41085, SA42264

13) A design error within WebKit in the handling of the CSS ":visited" pseudo-class can be exploited to determine which sites a user has visited.

SOLUTION: Update to iOS 4.2 (downloadable and installable via iTunes).

PROVIDED AND/OR DISCOVERED BY: The vendor credits:
1) Barry Simpson, Bomgar Corporation
3, 9) Aaron Sigel, vtty.com
5) Bui Quang Minh, Bkis
6) Mike Cardwell, Cardwell IT Ltd.
10) Philippe Couturier, izypage.com and Andrew Wellington, The Australian National University
11) Ralf-Philipp Weinmann, University of Luxembourg

ORIGINAL ADVISORY: Apple: http://support.apple.com/kb/HT4456






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