Secunia

Some vulnerabilities have been reported in Apple iPhone and iPod touch, which can be exploited by malicious people to conduct spoofing and cross-site scripting attacks, cause a DoS (Denial of Service), bypass certain security restrictions, or compromise a user's system.

1) An error in CFNetwork can be exploited to spoof secure websites via 502 Bad Gateway errors from a malicious HTTPS proxy server.

2) A vulnerability in the handling of packets with an IPComp header can be exploited to cause a DoS.

For more information:
SA29130

3) An error within Safari in the handling of Unicode ideographic spaces can be exploited to spoof the URL of a trusted web site in the address bar.

4) An error exists in Safari within the handling of self-signed or invalid certificates. If a user clicks on the menu button while being prompted to accept or reject such a certificate, Safari automatically accepts the certificate on the next visit.

5) A signedness error in Safari when handling Javascript array indices can be exploited to trigger an out-of-bounds memory access and may allow execution of arbitrary code.

6) A vulnerability due to Safari ignoring Unicode Byte-order-Mark (BOM) sequences when parsing web pages can be exploited to bypass certain HTML and Javascript filtering mechanisms.

This is related to vulnerability #8 in:
SA20376

7) A vulnerability Safari can be exploited by malicious people to compromise a vulnerable system.

For more information see vulnerability #3 in:
SA30775

8) An unspecified error exists in WebKit when processing copied CSSStyleSheet objects of style elements. This can be exploited to cause a memory corruption and may allow execution of arbitrary code when a user visits a specially crafted web page.

9) An error in Safari when handling xml documents can be exploited by malicious people to cause a DoS (Denial of Service).

For more information:
SA28444

10) An error in Safari when processing xml documents can potentially be exploited by malicious people to compromise a user's system.

For more information:
SA30315

11) An unspecified error exists in JavaScriptCore's handling of runtime garbage collection. This can be exploited to cause a memory corruption and may allow execution of arbitrary code when a user visits a specially crafted web page.

12) Some vulnerabilities in Safari can be exploited by malicious people to conduct cross-site scripting attacks or potentially to compromise a user's system.

For more information:
SA29846

The vulnerabilities are reported in iPhone version 1.0 through 1.1.4, and iPod touch version 1.1 through 1.1.4.

Solution
Upgrade to version 2.0 (downloadable and installable via iTunes).

Provided and/or discovered by
The vendor credits:
4) Hiromitsu Takagi
5) SkyLined, Google
6) Chris Weber, Casaba Security, LLC
7) James Urquhart
8) Peter Vreudegnhil, working with the TippingPoint Zero Day Initiative
10) Anthony de Almeida Lopes of Outpost24 AB, and Chris Evans of Google Security Team
11) Itzik Kotler and Jonathan Rom of Radware
12) Robert Swiecki of the Google Security Team, David Bloom, and Charlie Miller of Independent Security Evaluators

Changelog
Further details available in Customer Area

Original Advisory
Apple:
http://support.apple.com/kb/HT2351

JVN:
http://jvn.jp/jp/JVN88676089/index.html

Chris Evans:
http://scary.beasts.org/security/CESA-2008-004.html

ZDI:
http://www.zerodayinitiative.com/advisories/ZDI-08-045/

SkyLined:
http://lists.grok.org.uk/pipermail/full-disclosure/2009-January/066830.html

Other references
Further details available in Customer Area

Deep Links
Links available in Customer Area