Joined: 12 May 2004
|Posted: Mon May 09, 2005 7:51 pm Post subject: [ GLSA 200505-05 ] gzip: Multiple vulnerabilities
|Gentoo Linux Security Advisory
Title: gzip: Multiple vulnerabilities (GLSA 200505-05)
Date: May 09, 2005
Bug(s): #89946, #90626
gzip contains multiple vulnerabilities potentially allowing an attacker to execute arbitrary commands.
gzip (GNU zip) is a popular compression program. The included zgrep utility allows you to grep gzipped files in place.
Vulnerable: < 1.3.5-r6
Unaffected: >= 1.3.5-r6
Architectures: All supported architectures
The gzip and gunzip programs are vulnerable to a race condition when setting file permissions (CAN-2005-0988), as well as improper handling of filename restoration (CAN-2005-1228). The zgrep utility improperly sanitizes arguments, which may come from an untrusted source (CAN-2005-0758).
These vulnerabilities could allow arbitrary command execution, changing the permissions of arbitrary files, and installation of files to an aribitrary location in the filesystem.
There is no known workaround at this time.
All gzip users should upgrade to the latest stable version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/gzip-1.3.5-r6"
Last edited by GLSA on Sun May 07, 2006 4:56 pm; edited 1 time in total