CVE-2008-1948: GNU Gnutls

High severity, CVSS 10.0. EPSS: 12% chance of exploitation in the next 30 days.

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

• GNU Gnutls: version 1.0.18 only; version 1.0.19 only; version 1.0.20 only; version 1.0.21 only; version 1.0.22 only; version 1.0.23 only; …

Published 2008-05-21. Last modified 2026-06-16.