TITLE:
ClamXav freshclam suid Permissions Security Issue

SECUNIA ADVISORY ID:
SA20085

VERIFY ADVISORY:
http://secunia.com/advisories/20085/

CRITICAL:
Less critical

IMPACT:
Exposure of sensitive information

WHERE:
Local system

SOFTWARE:
ClamXav 1.x
http://secunia.com/product/9925/

DESCRIPTION:
Kevin Finisterre has reported a security issue in ClamXav, which can
be exploited by malicious, local users to disclose potentially
sensitive information.

The security issue is caused due to the installer of ClamXav setting
the suid bit on the freshclam binary. This can be exploited to
disclose part of the contents of certain files (e.g. /etc/shadow) via
error messages that are displayed by freshclam when run with the
"--config-file" command line option.

The security issue has been reported in ClamXav 1.0.3h. Other
versions may also be affected.

SOLUTION:
Restrict access to affected systems or remove the suid bit from the
affected binary.

PROVIDED AND/OR DISCOVERED BY:
Kevin Finisterre

ORIGINAL ADVISORY:
http://www.digitalmunition.com/DMA%5B2006-0514a%5D.txt

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