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MrPlow writes:

Submitted via IRC for TheMightyBuzzard

iOS 10.3.2, which Apple released in mid-May, patches seven AVEVideoEncoder vulnerabilities and one IOSurface flaw discovered by Adam Donenfeld of mobile security firm Zimperium. The security holes, which Apple says can be used by an application to gain kernel privileges, are believed to affect all prior versions of the iOS operating system.

The vulnerabilities are tracked as CVE-2017-6979, CVE-2017-6989, CVE-2017-6994, CVE-2017-6995, CVE-2017-6996, CVE-2017-6997, CVE-2017-6998 and CVE-2017-6999. The bugs were discovered between January 24 and March 20, when they were reported to Apple.

Donenfeld, who disclosed his findings this week at the Hack in the Box security conference in Singapore, said he identified the vulnerabilities while analyzing iOS kernel modules. His analysis led to a little-known module, called AppleAVE, which appeared to lack basic security.

Donenfeld demonstrated how some of the flaws in AppleAVE and IOSurface, which can lead to denial-of-service (DoS), information disclosure and privilege escalation, can be chained to achieve arbitrary read/write and root access. The exploit is said to bypass all iOS security mitigations.

"These vulnerabilities would allow elevation of privileges which ultimately can be used by the attacker to take complete control over affected devices," the researcher said in a blog post.

We really need to standardize TLA definitions. PoC confused me for about half a second in the original headline [Ed: changed it to avoid further confusion here].

Source: http://www.securityweek.com/poc-released-dangerous-ios-kernel-exploit

Original Submission