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CVE-2012-3405

19
FAUCET Score

CVE-2012-3405 describes a denial-of-service vulnerability in the vfprintf function of the GNU C Library (glibc) 2.14 and other versions, affecting products from Canonical, GNU, and Red Hat. Attackers can exploit a buffer length miscalculation by providing a format string with numerous specifiers, bypassing FORTIFY_SOURCE protection and leading to a segmentation fault. This vulnerability has a CVSS score of 5.0 (medium severity) due to its network-based attack vector, low complexity, and potential for denial of service. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.14CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:2.14:*:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:redhat:enterprise_virtualization:3.0:*:*:*:*:*:*:*
8.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:8.04:-:lts:*:*:*:*:*
10.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:10.04:-:lts:*:*:*:*:*
11.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.09%
Probability of exploitation in next 30 days
EPSS Percentile
79.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0209 is in the 68th percentile among its peer group of 23,705 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 (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: glibc-0:2.12-1.80.el6_3.3
View patch
redhatpatch availablevia redhat_api
Product: RHEV 3.X Hypervisor and Agents for RHEL-6Fixed in: rhev-hypervisor6-0:6.3-20120815.0.el6_3
View patch

Vendor Advisories (1)

redhatCVE-2012-3405Moderate

glibc: incorrect use of extend_alloca() in formatted printing can lead to FORTIFY_SOURCE format string protection bypass

Jul 11, 2012

References

rhn.redhat.com / errata/RHSA-2012-1098.html
rhn.redhat.com / errata/RHSA-2012-1200.html
bugzilla.redhat.com / show_bug.cgi
security.gentoo.org / glsa/201503-04
sourceware.org / bugzilla/show_bug.cgi
openwall.com / lists/oss-security/2012/07/11/17
ubuntu.com / usn/USN-1589-1