Vulnerability CVE-2014-3466

Vulnerability CVE-2014-3466

Published: 2014-06-03

Description:

Buffer overflow in the read_server_hello function in lib/gnutls_handshake.c in GnuTLS before 3.1.25, 3.2.x before 3.2.15, and 3.3.x before 3.3.4 allows remote servers to cause a denial of service (memory corruption) or possibly execute arbitrary code via a long session id in a ServerHello message.

See advisories in our WLB2 database:

	Topic	Author	Date
Med.	GnuTLS 3.3.3 remote memory corruption	Nikos Mavrogiann...	05.06.2014
High	GNUTLS insufficient session id length check PoC	Aaron Zauner	06.06.2014

Type:

CWE-119

(Improper Restriction of Operations within the Bounds of a Memory Buffer)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score	Impact Subscore	Exploitability Subscore
6.8/10	6.4/10	8.6/10

Exploit range	Attack complexity	Authentication
Remote	Medium	No required
Confidentiality impact	Integrity impact	Availability impact
Partial	Partial	Partial

Affected software
GNU -> Gnutls

References:

http://linux.oracle.com/errata/ELSA-2014-0594.html

http://linux.oracle.com/errata/ELSA-2014-0595.html

http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00002.html

http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00007.html

http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00010.html

http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00015.html

http://radare.today/technical-analysis-of-the-gnutls-hello-vulnerability/

http://rhn.redhat.com/errata/RHSA-2014-0594.html

http://rhn.redhat.com/errata/RHSA-2014-0595.html

http://rhn.redhat.com/errata/RHSA-2014-0684.html

http://rhn.redhat.com/errata/RHSA-2014-0815.html

http://secunia.com/advisories/59408

http://secunia.com/advisories/60384

http://www-01.ibm.com/support/docview.wss?uid=swg21678776

http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5096155

http://www.debian.org/security/2014/dsa-2944

http://www.gnutls.org/security.html

http://www.novell.com/support/kb/doc.php?id=7015302

http://www.novell.com/support/kb/doc.php?id=7015303

http://www.securityfocus.com/bid/67741

http://www.securitytracker.com/id/1030314

http://www.ubuntu.com/usn/USN-2229-1

https://bugzilla.redhat.com/show_bug.cgi?id=1101932

https://www.gitorious.org/gnutls/gnutls/commit/688ea6428a432c39203d00acd1af0e7684e5ddfd

Vulnerability CVE-2014-3466

Buffer overflow in the read_server_hello function in lib/gnutls_handshake.c in GnuTLS before 3.1.25, 3.2.x before 3.2.15, and 3.3.x before 3.3.4 allows remote servers to cause a denial of service (memory corruption) or possibly execute arbitrary code via a long session id in a ServerHello message.

See advisories in our WLB2 database:

Med.

GnuTLS 3.3.3 remote memory corruption

High

GNUTLS insufficient session id length check PoC

CWE-119

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

6.8/10

6.4/10

8.6/10

Remote

Medium

No required

Partial

Partial

Partial

Affected software

References: