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Date: Mon, 14 Dec 2015 21:22:04 +0000
From: halfdog <me@...fdog.net>
To: fulldisclosure@...lists.org
Subject: [FD] User man Local Root Exploit/Linux Kernel setgid Directory
Privilege Escalation/PAM Owner Check Weakness
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Hello List,
This ([1]) is a short article how to use the setgid directory
/var/cache/man to escalate privileges from man/man to man/root on Ubuntu
Vivid and to root/root via the "catman" cron job [2]. In my opinion this
is not a really big issue, but I had quite fun analyzing it and writing
a tool to use SUID-binaries to create arbitrary SGID-binaries. So
perhaps someone else might have fun reading the article and reproducing
the results.
hd
[1]
http://www.halfdog.net/Security/2015/SetgidDirectoryPrivilegeEscalation/
[2]
http://www.halfdog.net/Security/2015/MandbSymlinkLocalRootPrivilegeEscalation/
- --
http://www.halfdog.net/
PGP: 156A AE98 B91F 0114 FE88 2BD8 C459 9386 feed a bee
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