CVE-2015-3238
The _unix_run_helper_binary function in the pam_unix module in Linux-PAM (aka pam) before 1.2.1, when unable to directly access passwords, allows local users to enumerate usernames or cause a denial
02 Description
The _unix_run_helper_binary function in the pam_unix module in Linux-PAM (aka pam) before 1.2.1, when unable to directly access passwords, allows local users to enumerate usernames or cause a denial
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.70% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 85.8% of scored records. A rank, not a probability.
- NVD base score
- 6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2015-08-24 14:00Z11 YR AGO
- Last updated
- 2024-08-06 05:39Z2 YR AGO
- Reserved
- 2015-04-10
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- adb9681a98a17e60ca516a0a62bbaa281f44551e522fdc16764b6be3491754b7
05 Affected products
06 References
- lists.fedoraproject.orgFEDORA-2015-10830http://lists.fedoraproject.org/pipermail/package-announce/2015-June/161249.html
- rhn.redhat.comRHSA-2015:1640http://rhn.redhat.com/errata/RHSA-2015-1640.html
- www.openwall.com[oss-security] 20150625 Linux-PAM 1.2.1 released to address CVE-2015-3238http://www.openwall.com/lists/oss-security/2015/06/25/13
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1228571
- www.trustwave.comhttps://www.trustwave.com/Resources/Security-Advisories/Advisories/TWSL2015-011/?fid=6551
- security.gentoo.orgGLSA-201605-05https://security.gentoo.org/glsa/201605-05
- www.ubuntu.comUSN-2935-2http://www.ubuntu.com/usn/USN-2935-2
- www.ubuntu.comUSN-2935-3http://www.ubuntu.com/usn/USN-2935-3
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
- www.ubuntu.comUSN-2935-1http://www.ubuntu.com/usn/USN-2935-1
- lists.fedoraproject.orgFEDORA-2015-10848http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161350.html
- www.securityfocus.com75428http://www.securityfocus.com/bid/75428
- www.trustwave.comhttps://www.trustwave.com/Resources/SpiderLabs-Blog/Username-Enumeration-against-OpenSSH-SELinux-with-CVE-2015-3238/
07 Fixed in
Debian 12
- pam Fixed in 1.1.8-3.2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- pam Fixed in 1.1.8-3.2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- pam Fixed in 1.1.8-3.2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- pam Fixed in 1.1.8-1ubuntu2.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- pam Fixed in 1.1.8-3.2ubuntu2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.