CVE-2011-3148

Stack-based buffer overflow in the _assemble_line function in modules/pam_env/pam_env.c in Linux-PAM (aka pam) before 1.1.5 allows local users to cause a denial of service (crash) and possibly execute arbitrary code via a long string of white spaces at the beginning of the ~/.pam_environment file.

Published: 2012-07-22 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-3148 is rated Low Risk (30.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.16%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-3148

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 0.14% 0.16% +0.01%
2 2025-03-29 0.16% 0.14% -0.01%
3 2025-03-17 — 0.16% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-3148

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.6 2.0 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.9 6.4 [email protected]

Weakness enumeration for CVE-2011-3148

OS Trackers for CVE-2011-3148

vendor priority summary link
debian not yet assigned CVE-2011-3148 not yet assigned priority: Debian including 1 source packages (pam), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2011-3148
gentoo high CVE-2011-3148: 1 GLSA(s) (201206-31), 1 atom(s) (sys-libs/pam); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-3148
redhat medium — https://access.redhat.com/security/cve/CVE-2011-3148
suse medium CVE-2011-3148 severity moderate: SUSE including 57 source package names (pam-1.0.4-0.7.1, pam-1.1.5-0.10.17, …), 88 product×package rows across 34 product lines (SUSE Linux Enterprise Desktop 12, SUSE Linux Enterprise Desktop 12 SP1, … (34 product lines)): Fixed 88. https://www.suse.com/security/cve/CVE-2011-3148/
ubuntu medium CVE-2011-3148 medium priority: Ubuntu including 1 source packages (pam), 6 status rows across 6 suites (hardy, lucid, maverick, natty, oneiric, upstream): released 5, needs-triage 1. https://ubuntu.com/security/CVE-2011-3148

Affected software / configurations for CVE-2011-3148

Vendor Product Version Raw CPE
linux-pam linux-pam <= 1.1.4 cpe:2.3:a:linux-pam:linux-pam:*:*:*:*:*:*:*:*
linux-pam linux-pam 0.99.1.0 cpe:2.3:a:linux-pam:linux-pam:0.99.1.0:*:*:*:*:*:*:*
linux-pam linux-pam 0.99.2.0 cpe:2.3:a:linux-pam:linux-pam:0.99.2.0:*:*:*:*:*:*:*
linux-pam linux-pam 0.99.2.1 cpe:2.3:a:linux-pam:linux-pam:0.99.2.1:*:*:*:*:*:*:*
linux-pam linux-pam 0.99.3.0 cpe:2.3:a:linux-pam:linux-pam:0.99.3.0:*:*:*:*:*:*:*
linux-pam linux-pam 0.99.4.0 cpe:2.3:a:linux-pam:linux-pam:0.99.4.0:*:*:*:*:*:*:*
linux-pam linux-pam 0.99.5.0 cpe:2.3:a:linux-pam:linux-pam:0.99.5.0:*:*:*:*:*:*:*
linux-pam linux-pam 0.99.6.0 cpe:2.3:a:linux-pam:linux-pam:0.99.6.0:*:*:*:*:*:*:*
linux-pam linux-pam 0.99.6.1 cpe:2.3:a:linux-pam:linux-pam:0.99.6.1:*:*:*:*:*:*:*
linux-pam linux-pam 0.99.6.2 cpe:2.3:a:linux-pam:linux-pam:0.99.6.2:*:*:*:*:*:*:*
linux-pam linux-pam 0.99.6.3 cpe:2.3:a:linux-pam:linux-pam:0.99.6.3:*:*:*:*:*:*:*
linux-pam linux-pam 0.99.7.0 cpe:2.3:a:linux-pam:linux-pam:0.99.7.0:*:*:*:*:*:*:*
linux-pam linux-pam 0.99.7.1 cpe:2.3:a:linux-pam:linux-pam:0.99.7.1:*:*:*:*:*:*:*
linux-pam linux-pam 0.99.8.0 cpe:2.3:a:linux-pam:linux-pam:0.99.8.0:*:*:*:*:*:*:*
linux-pam linux-pam 0.99.8.1 cpe:2.3:a:linux-pam:linux-pam:0.99.8.1:*:*:*:*:*:*:*
linux-pam linux-pam 0.99.9.0 cpe:2.3:a:linux-pam:linux-pam:0.99.9.0:*:*:*:*:*:*:*
linux-pam linux-pam 0.99.10.0 cpe:2.3:a:linux-pam:linux-pam:0.99.10.0:*:*:*:*:*:*:*
linux-pam linux-pam 1.0.0 cpe:2.3:a:linux-pam:linux-pam:1.0.0:*:*:*:*:*:*:*
linux-pam linux-pam 1.0.1 cpe:2.3:a:linux-pam:linux-pam:1.0.1:*:*:*:*:*:*:*
linux-pam linux-pam 1.0.2 cpe:2.3:a:linux-pam:linux-pam:1.0.2:*:*:*:*:*:*:*
linux-pam linux-pam 1.0.3 cpe:2.3:a:linux-pam:linux-pam:1.0.3:*:*:*:*:*:*:*
linux-pam linux-pam 1.0.4 cpe:2.3:a:linux-pam:linux-pam:1.0.4:*:*:*:*:*:*:*
linux-pam linux-pam 1.1.0 cpe:2.3:a:linux-pam:linux-pam:1.1.0:*:*:*:*:*:*:*
linux-pam linux-pam 1.1.1 cpe:2.3:a:linux-pam:linux-pam:1.1.1:*:*:*:*:*:*:*
linux-pam linux-pam 1.1.2 cpe:2.3:a:linux-pam:linux-pam:1.1.2:*:*:*:*:*:*:*
linux-pam linux-pam 1.1.3 cpe:2.3:a:linux-pam:linux-pam:1.1.3:*:*:*:*:*:*:*

References for CVE-2011-3148

cvelogic Threat Intelligence