CVE-2015-3238
Summary
| CVE | CVE-2015-3238 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2015-08-24 14:59:04 UTC |
| Updated | 2026-05-06 22:30:45 UTC |
| 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 of service (hang) via a large password. |
Risk And Classification
Primary CVSS: v3.0 6.5 MEDIUM from [email protected]
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Problem Types: CWE-200 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.0 | [email protected] | Primary | 6.5 | MEDIUM | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L |
| 2.0 | [email protected] | Primary | 5.8 | AV:N/AC:M/Au:N/C:P/I:N/A:P |
CVSS v3.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
LowIntegrity
NoneAvailability
LowCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
MediumAuthentication
NoneConfidentiality
PartialIntegrity
NoneAvailability
PartialAV:N/AC:M/Au:N/C:P/I:N/A:P
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Linux-pam | Linux-pam | All | All | All | All |
| Application | Oracle | Sparc-opl Service Processor | All | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| [SECURITY] Fedora 22 Update: pam-1.1.8-19.fc22 | af854a3a-2127-422b-91ae-364da2661108 | lists.fedoraproject.org | |
| Bug 1228571 – CVE-2015-3238 pam: DoS/user enumeration due to blocking pipe in pam_unix module | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.redhat.com | |
| USN-2935-1: PAM vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| Red Hat Customer Portal | af854a3a-2127-422b-91ae-364da2661108 | rhn.redhat.com | Vendor Advisory |
| Linux-PAM '_unix_run_helper_binary()' Function Denial of Service Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| Username Enumeration against OpenSSH/SELinux with CVE-2015-3238 | af854a3a-2127-422b-91ae-364da2661108 | www.trustwave.com | Exploit |
| USN-2935-2: PAM regression | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| Linux-PAM: Multiple vulnerabilities (GLSA 201605-05) — Gentoo security | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | |
| [SECURITY] Fedora 21 Update: pam-1.1.8-19.fc21 | af854a3a-2127-422b-91ae-364da2661108 | lists.fedoraproject.org | |
| www.trustwave.com/Resources/Security-Advisories/Advisories/TWSL2015-011 | af854a3a-2127-422b-91ae-364da2661108 | www.trustwave.com | Exploit |
| Oracle Critical Patch Update Advisory - April 2016 | af854a3a-2127-422b-91ae-364da2661108 | www.oracle.com | |
| USN-2935-3: PAM regression | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| oss-security - Linux-PAM 1.2.1 released to address CVE-2015-3238 | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | |
| Red Hat Customer Portal | MITRE | access.redhat.com | |
| CVE-2015-3238 - Red Hat Customer Portal | MITRE | access.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.