47467 : GnuTLS lib/gnutls_handshake.c _gnutls_handshake_hash_buffers_clear Function Remote DoS
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
3	253	over 3 years ago	over 3 years ago	2 times	45%

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Timeline

Disclosure Date	Vendor Solution Date
2008-06-30	2008-06-30

Description

<em style='font-weight:bold;'>(Description Provided by <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=2008-2377" target="_blank">CVE</a>)</em> : 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.

Classification

Location: Remote / Network Access
Attack Type: Denial of Service
Impact: Loss of Availability
Solution: Upgrade
Disclosure: Vendor Verified

Solution

Upgrade to version 2.4.1 or higher, as it has been reported to fix this vulnerability. In addition, Tomas Mraz has released a patch for some older versions.

Products

Unknown or Incomplete

References

CVE ID: 2008-2377 (see also: NVD)
Secunia Advisory ID: 31505
Other Advisory URL: http://article.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/2947
http://www.nabble.com/Details-on-the-gnutls_handshake-local-crash-problem--GNUTLS-SA-2008-2--td18205022.html
Vendor Specific News/Changelog Entry: http://www.gnu.org/software/gnutls/security.html
https://issues.rpath.com/browse/RPL-2650

Tools & Filters

	34019

Credit

Unknown or Incomplete

CVSSv2 Score

CVSSv2 Base Score = 7.6
Source: nvd.nist.gov | Generated: 2008-08-11 | Disagree?

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