Auth bypass in GNU Gnutls
CVE-2008-1949
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v2 metric
CVSS v2 base score 9.3 (High). Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.058 (92.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 92.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.058 · newest: 0.058 · change: 0.000
Affected products
- GNU Gnutls — versions 1.0.18, 1.0.19, 1.0.20
Weakness classification (CWE)
References
- secunia.com/advisories/30331 (Vendor Advisory, third-party-advisory)
- oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:9519 (signature, vdb-entry)
- secunia.com/advisories/31939 (third-party-advisory)
- www.ubuntu.com/usn/usn-613-1 (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2008-09/msg00003.html (vendor-advisory)
- www.redhat.com/support/errata/RHSA-2008-0492.html (vendor-advisory)
- www.openwall.com/lists/oss-security/2008/05/20/1 (mailing-list)
- security.gentoo.org/glsa/glsa-200805-20.xml (vendor-advisory)
- secunia.com/advisories/30355 (third-party-advisory)
- secunia.com/advisories/30317 (Vendor Advisory, third-party-advisory)