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Bug 1435646 - (CVE-2017-6966) CVE-2017-6966 binutils: Use-after-free in target_specific_reloc_handling in readelf
CVE-2017-6966 binutils: Use-after-free in target_specific_reloc_handling in r...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20170213,repor...
: Security
Depends On: 1435307 1435308 1435309
Blocks: 1435650
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Reported: 2017-03-24 08:41 EDT by Adam Mariš
Modified: 2017-05-30 00:42 EDT (History)
12 users (show)

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A vulnerability was found in readelf; part of binutils. A crafted executable or shared library could cause use-after-free and out-of-bounds writes, leading to a crash or possible code execution.
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Description Adam Mariš 2017-03-24 08:41:30 EDT 
readelf in GNU Binutils 2.28 has a use-after-free (specifically read-after-free) error while processing multiple, relocated sections in an MSP430 binary. This is caused by mishandling of an invalid symbol index, and mishandling of state across invocations.

Upstream bug:

https://sourceware.org/bugzilla/show_bug.cgi?id=21139

Upstream patch:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=f84ce13b6708801ca1d6289b7c4003e2f5a6d7f9
Comment 1 Adam Mariš 2017-03-24 08:58:36 EDT 
Created mingw-binutils tracking bugs for this issue:

Affects: epel-all [bug 1435309]
Comment 4 Doran Moppert 2017-05-30 00:42:17 EDT 
Statement:

Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
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