User man Local Root Exploit/Linux Kernel setgid Directory Privilege Escalation/PAM Owner Check Weakness

[halfdog <me () halfdog net>]

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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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