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Mutt Insecure Temporary File Creation Weaknesses
Secunia Advisory: SA22613
Release Date: 2006-10-30
Popularity: 7,306 views

Critical:
Not critical
Impact: Privilege escalation
Where: Local system
Solution Status: Unpatched

Software:Mutt 1.4.x

Secunia CVSS-2 Score: Available in Secunia business solutions

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Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

Description:
Some weaknesses have been reported in mutt, which potentially can be exploited by malicious, local users to perform certain actions with escalated privileges.

1) The "safe_open()" function insecurely creates temporary files on NFS directories, because the O_EXEC flag is not always correctly honored. This may be exploited to overwrite arbitrary files.

2) A race condition exists within the "mutt_adv_mktemp()" function between calling "mktemp()" and "safe_fopen()". This may be exploited to create files with weak permissions.

Change Page:
[ 1 ] [ 2 ] [ 3 ]



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