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CVE-2016-4354

24
FAUCET Score

CVE-2016-4354 describes a denial-of-service vulnerability in Libksba versions prior to 1.3.3, affecting products like Canonical and GnuPG Libksba and Ubuntu Linux. This flaw, rated 7.5 HIGH, stems from an incorrect integer data type in ber-decoder.c, allowing remote attackers to trigger a buffer overflow and crash the application via crafted BER data. There is no evidence of active exploitation, public exploit code, or significant community discussion, suggesting a low likelihood of widespread exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
<= 1.3.2CPE matchmatch criteria
cpe:2.3:a:gnupg:libksba:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.87%
Probability of exploitation in next 30 days
EPSS Percentile
77.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0187 is in the 60th percentile among its peer group of 51,455 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (3)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: libksba
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libksba
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libksba

Vendor Advisories (1)

redhatCVE-2016-4354Moderate

libksba: integer overflow in the BER decoder src/ber-decoder.c (ber_decoder_s)

Apr 8, 2015

References

git.gnupg.org / cgi-bin/gitweb.cgi
security.gentoo.org / glsa/201604-04
openwall.com / lists/oss-security/2016/04/29/5
openwall.com / lists/oss-security/2016/04/29/8
ubuntu.com / usn/USN-2982-1