CVE-2008-1948

Severity: critical (CVSS 10.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 12.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2008-05-21 · updated 2026-06-16
Weakness: CWE-189

Description

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.

Affected products

[UNKNOWN] gnutls: 1.0.18, 1.0.19, 1.0.20, 1.0.21, 1.0.22, 1.0.23 (+99)

References

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
http://secunia.com/advisories/30287
http://secunia.com/advisories/30302
http://secunia.com/advisories/30317
http://secunia.com/advisories/30324
http://secunia.com/advisories/30330
http://secunia.com/advisories/30331
http://secunia.com/advisories/30338

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