Path Traversal in FreeBSD
CVE-2011-4122
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v2 metric
CVSS v2 base score 6.9 (Medium). Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.009 (58.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- FreeBSD — versions 8.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- stealth.openwall.net/xSports/pamslam
- secunia.com/advisories/46756 (Vendor Advisory, third-party-advisory)
- openwall.com/lists/oss-security/2011/12/07/3 (mailing-list)
- trac.des.no/openpam/changeset/478/trunk/lib/openpam_configure.c
- exchange.xforce.ibmcloud.com/vulnerabilities/71205 (vdb-entry)
- osvdb.org/76945 (vdb-entry)
- c-skills.blogspot.com/2011/11/openpam-trickery.html (Exploit)
- openwall.com/lists/oss-security/2011/12/08/9 (mailing-list)
- secunia.com/advisories/46804 (Vendor Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2011-4122?
- CVE-2011-4122 is a vulnerability in FreeBSD, classified under Path Traversal. Published 2011-11-17.
- Is CVE-2011-4122 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.