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TITLE:
CheckInstall Insecure Temporary Files

SECUNIA ADVISORY ID:
SA30873

VERIFY ADVISORY:
http://secunia.com/advisories/30873/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

SOFTWARE:
CheckInstall 1.x
http://secunia.com/product/19193/

DESCRIPTION:
Two security issues have been reported in CheckInstall, which can be
exploited by malicious, local users to perform certain actions with
escalated privileges.

The security issues are caused due to the "checkinstall" and
"installwatch" scripts creating directories in an insecure manner.
This can potentially be exploited via symlink attacks to delete or
modify arbitrary files with the privileges of the user running the
affected scripts.

The security issues are reported in version 1.6.1. Other versions may
also be affected.

SOLUTION:
Restrict local access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Reported by Felipe Sateler in a Debian bug report.

ORIGINAL ADVISORY:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=488140

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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