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(CVE-2014-0476) app-forensics/chkrootkit: local privilege e.
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kernelOfTruth
Watchman
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Joined: 20 Dec 2005
Posts: 6108
Location: Vienna, Austria; Germany; hello world :)

PostPosted: Tue Jun 10, 2014 2:07 pm    Post subject: (CVE-2014-0476) app-forensics/chkrootkit: local privilege e. Reply with quote

http://www.openwall.com/lists/oss-security/2014/06/04/9

http://thehackernews.com/2014/06/linux-kernel-vulnerable-to-privilege_7.html

Quote:
CHKROOTKIT - ANOTHER CRITICAL FLAW
The vulnerability highlighted two days after Thomas Stangner reported a serious flaw in the chkrootkit (Check Rootkit), a rootkit detector, that allows a local attacker to gain root access to gain root control by executing malicious code inside the /tmp directory.
A common Unix-based program, chkrootkit helps system administrators to check their systems for known rootkits. The vulnerability in the chkrootkit, assigned CVE-2014-0476 ID, actually resides in the slapper() function in the shell script chkrootkit package. A non-root user can place any malicious executable file named 'update' in /tmp folder, which will get executed as root whenever chkrootkit will scan this directory for rootkits.



so if I understood correctly - it helps mitigating this (and other) issue(s)

by mounting /tmp with noexec,nosuid,nodev

?


this might break some apps - but at least you can remount it as needed
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Hardcore Gentoo Linux user since 2004 :D
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