Use-after-free vulnerability in WebKit, as used in Apple Safari before 5.0.5; iOS before 4.3.2 for iPhone, iPod, and iPad; iOS before 4.2.7 for iPhone 4 (CDMA); and possibly other products allows remote attackers to execute arbitrary code by adding children to a WBR tag and then removing the tag, related to text nodes, as demonstrated by Chaouki Bekrar during a Pwn2Own competition at CanSecWest 2011.

Networking in Apple iOS before 4.2 accesses an invalid pointer during the processing of packet filter rules, which allows local users to gain privileges via unspecified vectors.

Apple iOS before 4.2 does not properly validate signatures before displaying a configuration profile in the configuration installation utility, which allows remote attackers to spoof profiles via unspecified vectors.

Heap-based buffer overflow in the GSM mobility management implementation in Telephony in Apple iOS before 4.2 on the iPhone and iPad allows remote attackers to execute arbitrary code on the baseband processor via a crafted Temporary Mobile Subscriber Identity (TMSI) field.

WebKit in Apple iOS before 4.2 allows remote attackers to bypass the remote image loading setting in Mail via an HTML LINK element with a DNS prefetching property, as demonstrated by an HTML e-mail message that uses a LINK element for X-Confirm-Reading-To functionality, a related issue to CVE-2010-3813.

Photos in Apple iOS before 4.2 enables support for HTTP Basic Authentication over an unencrypted connection, which allows man-in-the-middle attackers to read MobileMe account passwords by spoofing a MobileMe Gallery server during a "Send to MobileMe" action.

iAd Content Display in Apple iOS before 4.2 allows man-in-the-middle attackers to make calls via a crafted URL in an ad.

Use-after-free vulnerability in WebKit in Apple Safari before 5.0 on Mac OS X 10.5 through 10.6 and Windows, Safari before 4.1 on Mac OS X 10.4, and Safari on Apple iPhone OS allows remote attackers to execute arbitrary code or cause a denial of service (application crash), or read the SMS database or other data, via vectors related to "attribute manipulation," as demonstrated by Vincenzo Iozzo and Ralf Philipp Weinmann during a Pwn2Own competition at CanSecWest 2010.