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CVE-2015-3308

20
FAUCET Score

CVE-2015-3308 is a double free vulnerability in GnuTLS versions prior to 3.3.14, specifically affecting the lib/x509/x509_ext.c component. This flaw allows remote attackers to trigger a denial of service or potentially achieve other unspecified impacts by providing a specially crafted CRL distribution point. With a CVSS score of 7.5, this vulnerability is considered high severity, requiring no authentication and having low attack complexity, with potential impacts on confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or inclusion in CISA's KEV catalog, though it has received minimal community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.3.13CPE matchmatch criteria
cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*
15.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.92%
Probability of exploitation in next 30 days
EPSS Percentile
89.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0392 is in the 81st percentile among its peer group of 51,551 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

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 (1)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: gnutls

Vendor Advisories (1)

redhatCVE-2015-3308Moderate

gnutls: use-after-free flaw in CRL distribution points parsing

Apr 16, 2015

References

lists.fedoraproject.org / pipermail/package-announce/2015-April/155101.html
gitlab.com / gnutls/gnutls/commit/053ae65403216acdb0a4e78b25ad66ee9f444f02
gitlab.com / gnutls/gnutls/commit/d6972be33264ecc49a86cd0958209cd7363af1e9
security.gentoo.org / glsa/201506-03
gnutls.org / security.html
openwall.com / lists/oss-security/2015/04/15/6
openwall.com / lists/oss-security/2015/04/16/6
securityfocus.com / bid/74188
securitytracker.com / id/1033774
ubuntu.com / usn/USN-2727-1