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CVE-2011-3148

17
FAUCET Score

CVE-2011-3148 describes a stack-based buffer overflow in the _assemble_line function of Linux-PAM (pam) versions prior to 1.1.5. This vulnerability allows local users to trigger a denial of service or potentially execute arbitrary code by supplying a long string of whitespace in the ~/.pam_environment file. With a CVSS score of 4.6, it is considered of moderate severity, requiring local access and low attack complexity to achieve partial confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.1.4CPE matchmatch criteria
cpe:2.3:a:linux-pam:linux-pam:*:*:*:*:*:*:*:*
0.99.1.0CPE matchmatch criteria
cpe:2.3:a:linux-pam:linux-pam:0.99.1.0:*:*:*:*:*:*:*
0.99.2.0CPE matchmatch criteria
cpe:2.3:a:linux-pam:linux-pam:0.99.2.0:*:*:*:*:*:*:*
0.99.2.1CPE matchmatch criteria
cpe:2.3:a:linux-pam:linux-pam:0.99.2.1:*:*:*:*:*:*:*
0.99.3.0CPE matchmatch criteria
cpe:2.3:a:linux-pam:linux-pam:0.99.3.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.6MEDIUM

AV:L/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.70%
Probability of exploitation in next 30 days
EPSS Percentile
49.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0070 is in the 84th percentile among its peer group of 3,052 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: pam-0:1.1.1-13.el6
View patch

Vendor Advisories (1)

redhatCVE-2011-3148Moderate

(pam_env): Stack-based buffer overflow by parsing user's pam_environment file

Oct 24, 2011

References

git.fedorahosted.org / git
bugs.launchpad.net / ubuntu/+source/pam/+bug/874469
secunia.com / advisories/46583
Vendor Advisory
secunia.com / advisories/49711
Vendor Advisory
security.gentoo.org / glsa/glsa-201206-31.xml
ubuntu.com / usn/USN-1237-1