Link following in CUPS - CVE-2013-6891
Published: January 26, 2014 / Updated: July 28, 2020
Vulnerability identifier: #VU32580
CSH Severity: Low
CVSS v4: 2.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2013-6891
CWE-ID: CWE-59
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local non-authenticated attacker to gain access to sensitive information.
lppasswd in CUPS before 1.7.1, when running with setuid privileges, allows local users to read portions of arbitrary files via a modified HOME environment variable and a symlink attack involving .cups/client.conf.
Affected software
CUPS
Ubuntu
cups (Alpine package)
cups-client (Ubuntu package)
Ubuntu
cups (Alpine package)
cups-client (Ubuntu package)
How to mitigate CVE-2013-6891
Install update from vendor's website.
CUPS - update to 1.7.1
cups (Alpine package) - update to 1.7.1-r0
cups-client (Ubuntu package) - addressed in versions 1.6.1-0ubuntu11.5, 1.6.2-1ubuntu8, 1.7.0~rc1-0ubuntu5.2
cups (Alpine package) - update to 1.7.1-r0
cups-client (Ubuntu package) - addressed in versions 1.6.1-0ubuntu11.5, 1.6.2-1ubuntu8, 1.7.0~rc1-0ubuntu5.2