full-disclosure - [FD] Apport kernel_crashdump symlink vulnerability exploitation

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Message-ID: <560454CA.3000408@halfdog.net>
Date: Thu, 24 Sep 2015 19:53:46 +0000
From: halfdog <me@...fdog.net>
To: fulldisclosure@...lists.org
Subject: [FD] Apport kernel_crashdump symlink vulnerability exploitation

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Hello List,

Here [1] is a short write-up of the Ubuntu Apport kernel_crashdump
symlink vulnerabilities fixed today including some POCs.

While symlink exploitation itself is not really exiting, the creation
of a suitable payload is more interesting: logfile data has to be
crafted, so that after splitting in chunks, compression and base64
encoding, the result string must resemble a path to an
attacker-controllable executable. See [1] to read more.

hd

[1]
http://www.halfdog.net/Security/2015/ApportKernelCrashdumpFileAccessVulnerabilities/

- -- 
http://www.halfdog.net/
PGP: 156A AE98 B91F 0114 FE88 2BD8 C459 9386 feed a bee
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