National Cyber-Alert System
Vulnerability Summary for CVE-2008-2377
Original release date:08/08/2008
Last revised:06/19/2009
Source:
US-CERT/NIST
Overview
Use-after-free vulnerability in the _gnutls_handshake_hash_buffers_clear function in lib/gnutls_handshake.c in libgnutls in GnuTLS 2.3.5 through 2.4.0 allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via TLS transmission of data that is improperly used when the peer calls gnutls_handshake within a normal session, leading to attempted access to a deallocated libgcrypt handle.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
10.0
Exploitability Subscore:
4.9
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: High
Authentication: Not required to exploit
Impact Type:Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service
- Official Statement from Red Hat (08/11/2008)
-
Not vulnerable. This issue did not affect the versions of gnutls as shipped with Red Hat Enterprise Linux 4, or 5.
References to Advisories, Solutions, and Tools
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External Source: MLIST
Name: [gnutls-devel] 20080630 GnuTLS 2.4.1
Type: Patch Information
External Source: CONFIRM
Name: https://issues.rpath.com/browse/RPL-2650
External Source: XF
Name: gnutls-gnutlshandshake-code-execution(44486)
External Source: BID
Name: 30713
External Source: MLIST
Name: [gnutls-devel] 20080630 Details on the gnutls_handshake local crash problem [GNUTLS-SA-2008-2]
External Source: CONFIRM
Name: http://www.gnu.org/software/gnutls/security.html
External Source: VUPEN
Name: ADV-2008-2398
External Source: SECUNIA
Name: 31505