CVE-2008-1949
HIGH severity · CVSS 9.3 · Improper authentication
9.3CVSS HIGH
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.
Impact & exploitability
Attack vectorNetwork
Attack complexity—
Privileges required—
User interaction—
Confidentiality impact—
Integrity impact—
Availability impact—
Exploit probability (EPSS)6%
AV:N/AC:M/Au:N/C:C/I:C/A:C
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://secunia.com/advisories/30287Advisory
- http://secunia.com/advisories/30302Advisory
- http://secunia.com/advisories/30317Advisory
- http://git.savannah.gnu.org/gitweb/?p=gnutls.git%3Ba=commitdiff%3Bh=bc8102405fda11ea00ca3b42acc4f4bce9d6e97b
- http://lists.gnu.org/archive/html/gnutls-devel/2008-05/msg00051.html
- http://lists.gnu.org/archive/html/gnutls-devel/2008-05/msg00055.html
- http://lists.gnu.org/archive/html/gnutls-devel/2008-05/msg00060.html
- http://lists.opensuse.org/opensuse-security-announce/2008-09/msg00003.html