TI-2019-02848 Aliases CVE-2019-3836 GHSA-fqw6-7w7w-627p

It was discovered in gnutls before version 3.6.7 upstream that there is an uninitialized…

LOW 39CWE-456Published 2019-04-01 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-824 and the CVSS impact.

Summary

It was discovered in gnutls before version 3.6.7 upstream that there is an uninitialized pointer access in gnutls versions 3.6.3 or later which can be triggered by certain post-handshake messages.

Why it matters now

EPSS 0.03429 89th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
GNU	gnutls	fixed in gnutls 3.6.7	—	No fix listed	CNA

gnutls VendorGNU Affected fixed in gnutls 3.6.7 Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPE	Versions	Role	Vendor
cpe:2.3:a:gnu:gnutls::::::::	3.6.3 to before 3.6.7	Vulnerable	GNU
cpe:2.3:o:fedoraproject:fedora:28:::::::*	28	Vulnerable	Fedoraproject
cpe:2.3:o:opensuse:leap:15.0:::::::*	15.0	Vulnerable	openSUSE

cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* Versions 3.6.3 to before 3.6.7 Vulnerable ·GNU
cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:* Versions 28 Vulnerable ·Fedoraproject
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:* Versions 15.0 Vulnerable ·openSUSE

Remediation

Red Hat 1 advisory

RHSA-2019:3600 Released 2019-11-05 · Red Hat rating Moderate
gnutls security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 8) gnutls-c++-3.6.8-8.el8, gnutls-dane-3.6.8-8.el8, gnutls-devel-3.6.8-8.el8 +1
- Red Hat Enterprise Linux BaseOS (v. 8) gnutls-3.6.8-8.el8

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Advisory · 2019-03-27
gnutls — RHSA-2019:3600
2 records Highest priority Priority HIGH 1 HIGH, 1 LOW
Other records, highest priority first
- TI-2019-02841 Use after free in gnutlsPriority HIGH 67
Show all 2 records → Advisory →
Advisory · 2019-03-27
gnutls — FEDORA-2019-46df367eed
2 records Highest priority Priority HIGH 1 HIGH, 1 LOW
Other records, highest priority first
- TI-2019-02841 Use after free in gnutlsPriority HIGH 67
Show all 2 records → Advisory →

Show 1 more group

Advisory · 2019-03-27
gnutls — GLSA-201904-14
2 records Highest priority Priority HIGH 1 HIGH, 1 LOW
Other records, highest priority first
- TI-2019-02841 Use after free in gnutlsPriority HIGH 67
Show all 2 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux AppStream (v. 8)	Fixed	RHSA-2019:3600
Red Hat Enterprise Linux BaseOS (v. 8)	Fixed	RHSA-2019:3600

Not affected: 3 products

Red Hat Enterprise Linux 5
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7

Timeline

2026-10-02 Threatist record created from CVE-2019-3836
2026-10-03 Alias added: GHSA-fqw6-7w7w-627p

References

Exploit 1

https://gitlab.com/gnutls/gnutls/issues/704

Advisory 7

TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
TI-2026-03321 Gnutls: gnutls: policy bypass due to case-sensitive nameconstraints comparison CVSS 3.1HIGH 7.4
TI-2024-00525 Gnutls: rejects certificate chain with distributed trust CVSS 3.1HIGH 7.5
TI-2023-00345 Observable discrepancy in gnutls CVSS 3.1HIGH 7.4
TI-2019-02841 Use after free in gnutls CVSS 3.0HIGH 7.5
TI-2017-03378 Double free vulnerability in the gnutls_x509_ext_import_proxy function in GnuTLS before… CVSS 3.0CRITICAL 9.8

See all 73 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences