Joined: 25 Feb 2003
Location: Essen, Germany
|Posted: Thu Jul 08, 2004 5:49 pm Post subject: [ GLSA 200407-07 ] Shorewall : Insecure temp file handling
|Gentoo Linux Security Advisory
Title: Shorewall : Insecure temp file handling (GLSA 200407-07)
Date: July 08, 2004
Updated: May 22, 2006
Shorewall contains a bug in the code handling the creation of temporary files and directories. This can allow a non-root user to overwrite arbitrary system files.
Shorewall is a high level tool for configuring Netfilter, the firewall facility included in the Linux Kernel.
Vulnerable: <= 1.4.10c
Unaffected: >= 1.4.10f
Architectures: All supported architectures
Shorewall uses temporary files and directories in an insecure manner. A local user could create symbolic links at specific locations, eventually overwriting other files on the filesystem with the rights of the shorewall process.
An attacker could exploit this vulnerability to overwrite arbitrary system files with root privileges, resulting in Denial of Service or further exploitation.
There is no known workaround at this time. All users should upgrade to the latest available version of Shorewall.
All users should upgrade to the latest available version of Shorewall, as follows:
|# emerge sync
# emerge -pv ">=net-firewall/shorewall-1.4.10f"
# emerge ">=net-firewall/shorewall-1.4.10f"
Last edited by GLSA on Tue May 23, 2006 4:17 am; edited 2 times in total