Joined: 12 May 2004
|Posted: Mon Mar 19, 2007 1:26 am Post subject: [ GLSA 200703-20 ] LSAT: Insecure temporary file creation
|Gentoo Linux Security Advisory
Title: LSAT: Insecure temporary file creation (GLSA 200703-20)
Date: March 18, 2007
Updated: May 11, 2007
LSAT insecurely creates temporary files which can lead to symlink attacks allowing a local user to overwrite arbitrary files.
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.
Vulnerable: < 0.9.5
Unaffected: >= 0.9.5
Architectures: All supported architectures
LSAT insecurely writes in /tmp with a predictable filename.
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.
There is no known workaround at this time.
All lsat users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/lsat-0.9.5"
Last edited by GLSA on Fri Apr 25, 2008 4:21 am; edited 3 times in total