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CVE-2017-5337

33
FAUCET Score

CVE-2017-5337 describes multiple heap-based buffer overflows in the read_attribute function of GnuTLS versions prior to 3.3.26 and 3.5.8, impacting products like GNU GnuTLS and OpenSUSE. This critical vulnerability (CVSS 9.8) allows remote attackers to achieve high confidentiality, integrity, and availability impact with low attack complexity, requiring no user interaction. While no public exploit code (Metasploit, Nuclei, ExploitDB) is available and it's not in CISA's KEV catalog, the vulnerability has garnered some community discussion and media coverage, indicating awareness despite its inactive status on the Hot List.

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
6.18%
Probability of exploitation in next 30 days
EPSS Percentile
92.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0618 is in the 87th percentile among its peer group of 36,835 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-2017-5337Moderate

gnutls: Heap read overflow in read-packet.c

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
bugs.chromium.org / p/oss-fuzz/issues/detail
Issue TrackingPatchThird Party Advisory
gitlab.com / gnutls/gnutls/commit/94fcf1645ea17223237aaf8d19132e004afddc1a
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/95372
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037576
Third Party AdvisoryVDB Entry