CVE-2011-4122 EXPLOIT
6.9
MEDIUM · CVSS 2.0 · EPSS 0.9% (pctl 58)
Patch early
A public exploit exists.
Description
Directory traversal vulnerability in openpam_configure.c in OpenPAM before r478 on FreeBSD 8.1 allows local users to load arbitrary DSOs and gain privileges via a .. (dot dot) in the service_name argument to the pam_start function, as demonstrated by a .. in the -c option to kcheckpass.
Scoring
| CVSS | 6.9 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:L/AC:M/Au:N/C:C/I:C/A:C |
| EPSS | 0.89% — more likely to be exploited than 58% of all CVEs |
| Weakness | CWE-22 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2011-11-17 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| freebsd | freebsd |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | OpenPAM - 'pam_start()' Local Privilege Escalation | 2011-11-09 |
References
- http://c-skills.blogspot.com/2011/11/openpam-trickery.html
- http://openwall.com/lists/oss-security/2011/12/07/3
- http://openwall.com/lists/oss-security/2011/12/08/9
- http://osvdb.org/76945
- http://secunia.com/advisories/46756
- http://secunia.com/advisories/46804
- http://stealth.openwall.net/xSports/pamslam
- http://trac.des.no/openpam/changeset/478/trunk/lib/openpam_configure.c
- https://exchange.xforce.ibmcloud.com/vulnerabilities/71205
- http://c-skills.blogspot.com/2011/11/openpam-trickery.html
- http://openwall.com/lists/oss-security/2011/12/07/3
- http://openwall.com/lists/oss-security/2011/12/08/9
- http://osvdb.org/76945
- http://secunia.com/advisories/46756
- http://secunia.com/advisories/46804
- http://stealth.openwall.net/xSports/pamslam
- http://trac.des.no/openpam/changeset/478/trunk/lib/openpam_configure.c
- https://exchange.xforce.ibmcloud.com/vulnerabilities/71205
→ the Explorer · watch your stack · NVD