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Difference between revisions of "Overlapping Segment Attack"
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| + | This is CVE-2013-0977. |
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This vulnerability was first mentioned by [[i0n1c]][https://twitter.com/i0n1c/status/306132590795051008][https://twitter.com/i0n1c/status/306165655877582848][https://twitter.com/i0n1c/status/306166203964071936]: "''So iOS 6.1.3 beta 2 also fixes the [[Overlapping Segment Attack]] against [[dyld]] used in [[evasi0n]].''" and "''The Accuvant Labs analysis is incomplete and does not mention this. They do not realize / mention that it is not possible to have a codeless [[dylib]] without exploiting [[dyld]].''" |
This vulnerability was first mentioned by [[i0n1c]][https://twitter.com/i0n1c/status/306132590795051008][https://twitter.com/i0n1c/status/306165655877582848][https://twitter.com/i0n1c/status/306166203964071936]: "''So iOS 6.1.3 beta 2 also fixes the [[Overlapping Segment Attack]] against [[dyld]] used in [[evasi0n]].''" and "''The Accuvant Labs analysis is incomplete and does not mention this. They do not realize / mention that it is not possible to have a codeless [[dylib]] without exploiting [[dyld]].''" |
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So a deeper investigation is necessary here. |
So a deeper investigation is necessary here. |
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| + | Apple's description in the iOS 6.1.3 security fixes: |
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| + | <cite> |
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| + | '''dyld'''<br/> |
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| + | Impact: A local user may be able to execute unsigned code<br/> |
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| + | Description: A state management issue existed in the handling of Mach-O executable files with overlapping segments. This issue was addressed by refusing to load an executable with overlapping segments. |
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| + | </cite> |
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== See also == |
== See also == |
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== References == |
== References == |
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* [http://blog.accuvantlabs.com/blog/bthomas/evasi0n-jailbreaks-userland-component Accuvant Labs analysis of evasi0n] |
* [http://blog.accuvantlabs.com/blog/bthomas/evasi0n-jailbreaks-userland-component Accuvant Labs analysis of evasi0n] |
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| + | * [http://support.apple.com/kb/HT5704 Apple's iOS 6.1.3 security fixes] |
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| + | * [http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-0977 NIST Reference CVE-2013-0977] |
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| + | * [http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-0977 Mitre Reference CVE-2013-0977] |
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[[Category:Exploits]] |
[[Category:Exploits]] |
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Revision as of 22:37, 6 April 2013
This is CVE-2013-0977. This vulnerability was first mentioned by i0n1c[1][2][3]: "So iOS 6.1.3 beta 2 also fixes the Overlapping Segment Attack against dyld used in evasi0n." and "The Accuvant Labs analysis is incomplete and does not mention this. They do not realize / mention that it is not possible to have a codeless dylib without exploiting dyld."
So a deeper investigation is necessary here.
Apple's description in the iOS 6.1.3 security fixes:
dyld
Impact: A local user may be able to execute unsigned code
Description: A state management issue existed in the handling of Mach-O executable files with overlapping segments. This issue was addressed by refusing to load an executable with overlapping segments.
