CVE-2008-1948
HIGH severity · CVSS 10 · CWE-189
10CVSS HIGH
Summary
The _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 calculate the number of Server Names in a TLS 1.0 Client Hello message during extension handling, which allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a zero value for the length of Server Names, which leads to a buffer overflow in session resumption data in the pack_security_parameters function, aka GNUTLS-SA-2008-1-1.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges required—
User interaction—
Confidentiality impact—
Integrity impact—
Availability impact—
Exploit probability (EPSS)12%
AV:N/AC:L/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://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/msg00060.html
- http://lists.opensuse.org/opensuse-security-announce/2008-09/msg00003.html
- http://secunia.com/advisories/30287
- http://secunia.com/advisories/30302
- http://secunia.com/advisories/30317
- http://lists.gnu.org/archive/html/gnutls-devel/2008-05/msg00055.htmlExploit