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[ GLSA 200703-20 ] LSAT: Insecure temporary file creation
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GLSA
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Joined: 12 May 2004
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PostPosted: Mon Mar 19, 2007 1:26 am    Post subject: [ GLSA 200703-20 ] LSAT: Insecure temporary file creation Reply with quote

Gentoo Linux Security Advisory

Title: LSAT: Insecure temporary file creation (GLSA 200703-20)
Severity: low
Exploitable: local
Date: March 18, 2007
Updated: May 11, 2007
Bug(s): #159542
ID: 200703-20

Synopsis

LSAT insecurely creates temporary files which can lead to symlink attacks allowing a local user to overwrite arbitrary files.

Background

The Linux Security Auditing Tool (LSAT) is a post install security auditor which checks many system configurations and local network settings on the system for common security or configuration errors and for packages that are not needed.

Affected Packages

Package: app-admin/lsat
Vulnerable: < 0.9.5
Unaffected: >= 0.9.5
Architectures: All supported architectures


Description

LSAT insecurely writes in /tmp with a predictable filename.

Impact

A local attacker could create symbolic links in the temporary files directory, pointing to a valid file somewhere on the filesystem. When the LSAT script is executed, this would result in the file being overwritten with the rights of the user running the software, which could be the root user.

Workaround

There is no known workaround at this time.

Resolution

All lsat users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/lsat-0.9.5"


References

CVE-2007-1500


Last edited by GLSA on Fri Apr 25, 2008 4:21 am; edited 3 times in total
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