GnuTLS libgnutls denial of service
|gnutls-libgnutls-dos (50445)||Medium Risk|
GnuTLS is vulnerable to a denial of service, caused by the improper handling of invalid DSA signatures by lib/pk-libgcrypt.c within libgnutls. A remote attacker could exploit this vulnerability using a specially-crafted DSA key that triggers a free of an uninitialized pointer or a double free to cause the application to crash.
Denial of Service
Upgrade to the latest version of GnuTLS (2.6.6 or later), available from the GNU TLS Library Project Web site. See References.
- GNU TLS Library Project Web site: The GNU Transport Layer Security Library .
- gnutls-devel Mailing List, 2009-04-30 10:36:31 GMTT: Double free and free of invalid pointer on certain errors [GNUTLS-SA-2009-1].
- BID-34783: GnuTLS Prior to 2.6.6 Multiple Remote Vulnerabilities
- CVE-2009-1415: lib/pk-libgcrypt.c in libgnutls in GnuTLS before 2.6.6 does not properly handle invalid DSA signatures, which allows remote attackers to cause a denial of service (application crash) and possibly have unspecified other impact via a malformed DSA key that triggers a (1) free of an uninitialized pointer or (2) double free.
- GLSA-200905-04: GnuTLS: Multiple vulnerabilities
- MDVSA-2009:116: gnutls
- SA34842: GnuTLS Multiple Vulnerabilities
- SECTRACK ID: 1022157: GnuTLS Bug in Validating DSA Signatures Lets Remote Users Deny Service
- Gentoo Linux
- GNU GnuTLS 2.6.0
- GNU GnuTLS 2.6.1
- GNU GnuTLS 2.6.2
- GNU GnuTLS 2.6.3
- GNU GnuTLS 2.6.4
- GNU GnuTLS 2.6.5
- MandrakeSoft Mandrake Linux 2008.1 X86_64
- MandrakeSoft Mandrake Linux 2008.1
- MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 4.0
- Mandriva Linux 2009.0
- Mandriva Linux 2009.0 X86_64
- Mandriva Linux 2009.1 X86_64
- Mandriva Linux 2009.1
Apr 30, 2009
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
For corrections or additions please email ignore thisxforceignore this@ignore thisus.ignore thisibm.comignore this
* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.