Link following in a2ps - CVE-2001-1593
Published: April 6, 2014 / Updated: August 3, 2020
Vulnerability identifier: #VU33158
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2001-1593
CWE-ID: CWE-59
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: GNU
Affected software:
a2ps
a2ps
Detailed vulnerability description
The vulnerability allows a local non-authenticated attacker to manipulate data.
The tempname_ensure function in lib/routines.h in a2ps 4.14 and earlier, as used by the spy_user function and possibly other functions, allows local users to modify arbitrary files via a symlink attack on a temporary file.
How to mitigate CVE-2001-1593
Install update from vendor's website.
Sources
- http://pkgs.fedoraproject.org/cgit/a2ps.git/plain/a2ps-4.13-security.patch
- http://seclists.org/oss-sec/2014/q1/237
- http://seclists.org/oss-sec/2014/q1/253
- http://seclists.org/oss-sec/2014/q1/257
- http://www.debian.org/security/2014/dsa-2892
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=737385
- https://bugzilla.redhat.com/show_bug.cgi?id=1060630