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CVE-2017-5336

34
FAUCET Score

CVE-2017-5336 is a critical stack-based buffer overflow vulnerability in the cdk_pk_get_keyid function of GnuTLS versions before 3.3.26 and 3.5.x before 3.5.8, affecting products like GNU GnuTLS and OpenSUSE. With a CVSS score of 9.8, this vulnerability allows remote attackers to achieve high impact on confidentiality, integrity, and availability without user interaction, simply by providing a crafted OpenPGP certificate. There is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit or ExploitDB, despite some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
42.1CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
42.2CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:*
<= 3.3.25CPE matchmatch criteria
cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*
3.5.0CPE matchmatch criteria
cpe:2.3:a:gnu:gnutls:3.5.0:*:*:*:*:*:*:*
3.5.1CPE matchmatch criteria
cpe:2.3:a:gnu:gnutls:3.5.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
7.07%
Probability of exploitation in next 30 days
EPSS Percentile
93.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0707 is in the 89th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

gentoopatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: gnutls-0:2.12.23-21.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: gnutls-0:3.3.26-9.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: gnutls

Vendor Advisories (1)

redhatCVE-2017-5336Moderate

gnutls: Stack overflow in cdk_pk_get_keyid

Jan 10, 2017

References

lists.opensuse.org / opensuse-security-announce/2017-02/msg00005.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2017-0574.html
access.redhat.com / errata/RHSA-2017:2292
bugs.chromium.org / p/oss-fuzz/issues/detail
Issue TrackingPatchThird Party Advisory
gitlab.com / gnutls/gnutls/commit/5140422e0d7319a8e2fe07f02cbcafc4d6538732
Issue TrackingPatchThird Party Advisory
gnutls.org / security.html
Vendor Advisory
security.gentoo.org / glsa/201702-04
PatchThird Party AdvisoryVendor Advisory
openwall.com / lists/oss-security/2017/01/10/7
Mailing ListPatchThird Party Advisory
openwall.com / lists/oss-security/2017/01/11/4
Mailing ListPatchThird Party Advisory
securityfocus.com / bid/95377
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037576
Third Party AdvisoryVDB Entry