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CVE-2017-7507· NVD / CVE Program· CNA redhat

GnuTLS version 3.5.12 and earlier is vulnerable to a NULL pointer dereference while decoding a status response TLS extension with valid cont

GnuTLS version 3.5.12 and earlier is vulnerable to a NULL pointer dereference while decoding a status response TLS extension with valid contents. This could lead to a crash of the GnuTLS server application.

HighCVSS 7.5 · v3.0—No exploit Fix available
Published
Jun 16, 2017
Updated
Jun 16, 2026
EPSS
3.4% · 88th percentile
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Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 3.4%

Affected systems

VendorProduct
gnugnutls

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • gnu gnutlsup to 3.5.12 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • GnuTLS gnutls

    • 3.5.12affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.10gnutlsbefore 3.5.13-r03.5.13-r0
Alpine:v3.3gnutlsbefore 3.14.17-r13.14.17-r1
Debian:12gnutls28before 3.5.8-63.5.8-6
Debian:8gnutls28before 3.3.8-6+deb8u63.3.8-6+deb8u6
Debian:9gnutls28before 3.5.8-5+deb9u13.5.8-5+deb9u1
Red Hat:enterprise_linux:7::clientgnutlsbefore 0:3.3.26-9.el70:3.3.26-9.el7
Red Hat:enterprise_linux:7::clientgnutls-c++before 0:3.3.26-9.el70:3.3.26-9.el7
Red Hat:enterprise_linux:7::clientgnutls-danebefore 0:3.3.26-9.el70:3.3.26-9.el7
Red Hat:enterprise_linux:7::clientgnutls-debuginfobefore 0:3.3.26-9.el70:3.3.26-9.el7
Red Hat:enterprise_linux:7::clientgnutls-develbefore 0:3.3.26-9.el70:3.3.26-9.el7
Red Hat:enterprise_linux:7::clientgnutls-utilsbefore 0:3.3.26-9.el70:3.3.26-9.el7
SUSE:Linux Enterprise Desktop 12 SP2gnutlsbefore 3.2.15-18.3.13.2.15-18.3.1

Same product

gnu: all records

Other highest-scoring records for the same primary product.

  • CVE-2017-5334Double free vulnerability in the gnutls_x509_ext_import_proxy function in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allows remote attacker
    49Plan
  • CVE-2019-3829A vulnerability was found in gnutls versions from 3.5.8 before 3.6.7.
    48Plan
  • CVE-2008-1948The _gnutls_server_name_recv_params function in lib/ext_server_name.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 does not properly c
    44Plan
  • CVE-2017-5337Multiple heap-based buffer overflows in the read_attribute function in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allow remote attackers to
    41Plan
  • CVE-2017-5336Stack-based buffer overflow in the cdk_pk_get_keyid function in lib/opencdk/pubkey.c in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allows r
    41Plan
  • CVE-2021-20232A flaw was found in gnutls.
    40Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:gnutls3.5.13-r0 · Alpine:v3.10Package registry (OSV)
debian:gnutls283.5.8-6 · Debian:12Package registry (OSV)
red hat:gnutls0:3.3.26-9.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:gnutls-c++0:3.3.26-9.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:gnutls-dane0:3.3.26-9.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:gnutls-debuginfo0:3.3.26-9.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:gnutls-devel0:3.3.26-9.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:gnutls-utils0:3.3.26-9.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
suse:gnutls3.2.15-18.3.1 · SUSE:Linux Enterprise Desktop 12 SP2Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records