GLSA-200407-07 : Shorewall : Insecure temp file handling
Medium Nessus Plugin ID 14540
SynopsisThe remote Gentoo host is missing one or more security-related patches.
DescriptionThe remote host is affected by the vulnerability described in GLSA-200407-07 (Shorewall : Insecure temp file handling)
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.
SolutionAll 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'