CVE-2011-5054

high

Description

kcheckpass passes a user-supplied argument to the pam_start function, often within a setuid environment, which allows local users to invoke any configured PAM stack, and possibly trigger unintended side effects, via an arbitrary valid PAM service name, a different vulnerability than CVE-2011-4122. NOTE: the vendor indicates that the possibility of resultant privilege escalation may be "a bit far-fetched."

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/72230

http://openwall.com/lists/oss-security/2012/01/02/11

http://openwall.com/lists/oss-security/2012/01/02/10

http://openwall.com/lists/oss-security/2011/12/28/5

http://openwall.com/lists/oss-security/2011/12/27/3

http://openwall.com/lists/oss-security/2011/12/27/1

http://openwall.com/lists/oss-security/2011/12/23/8

http://openwall.com/lists/oss-security/2011/12/08/9

http://openwall.com/lists/oss-security/2011/12/07/3

http://c-skills.blogspot.com/2011/11/openpam-trickery.html

Details

Source: Mitre, NVD

Published: 2012-01-06

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 6.9

Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00039