Skip to content
Fencer Vulns
critical 9.3

CVE-2008-1949 json

The _gnutls_recv_client_kx_message function in lib/gnutls_kx.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 continues to process Clie…

published 2008-05-21 18 y ago modified 2026-06-16 4 mo ago also EUVD-2008-1947

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.8%
EPSS 5.8% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

The _gnutls_recv_client_kx_message function in lib/gnutls_kx.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 continues to process Client Hello messages within a TLS message after one has already been processed, which allows remote attackers to cause a denial of service (NULL dereference and crash) via a TLS message containing multiple Client Hello messages, aka GNUTLS-SA-2008-1-2.

Patch / fix

  • gnutls RHEL 4 1.0.20-4.el4_6
  • gnutls RHEL 5 1.4.1-3.el5_1
  • gnutls-utils RHEL 5 1.4.1-3.el5_1

red hat advisories RHSA-2008:0492RHSA-2008:0489

  • gnutls openSUSE Tumbleweed 3.7.2-1.2

opensuse advisories openSUSE-SU-2024:10801-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2008-1949 updated

GNUTLS-SA-2008-1-2 GnuTLS null-pointer dereference

  • Red Hat Enterprise Linux (v. 5 server) gnutls 1.4.1-3.el5_1, gnutls-utils 1.4.1-3.el5_1
    fixed: vendor fix RHSA-2008:0489
  • Red Hat Enterprise Linux AS version 4 gnutls 1.0.20-4.el4_6
    fixed: vendor fix RHSA-2008:0492
  • Red Hat Enterprise Linux Desktop (v. 5 client) gnutls 1.4.1-3.el5_1, gnutls-utils 1.4.1-3.el5_1
    fixed: vendor fix RHSA-2008:0489
  • Red Hat Enterprise Linux Desktop version 4 gnutls 1.0.20-4.el4_6
    fixed: vendor fix RHSA-2008:0492
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) gnutls 1.4.1-3.el5_1, gnutls-utils 1.4.1-3.el5_1
    fixed: vendor fix RHSA-2008:0489
  • Red Hat Enterprise Linux ES version 4 gnutls 1.0.20-4.el4_6 Red Hat Enterprise Linux WS version 4 gnutls 1.0.20-4.el4_6
    fixed: vendor fix RHSA-2008:0492

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

5.77% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • cert.fi http://www.cert.fi/haavoittuvuudet/advisory-gnutls.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.