#VU32530 Buffer overflow in GnuTLS - CVE-2014-3466
Vulnerability identifier: #VU32530
Vulnerability risk: Medium
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2014-3466
CWE-ID:
CWE-119
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
GnuTLS
Universal components / Libraries /
Libraries used by multiple products
Vendor: GnuTLS
Description
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
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.
Mitigation
Install update from vendor's website.
Vulnerable software versions
GnuTLS: 3.1.0 - 3.3.3
External links
https://linux.oracle.com/errata/ELSA-2014-0594.html
https://linux.oracle.com/errata/ELSA-2014-0595.html
https://lists.opensuse.org/opensuse-security-announce/2014-06/msg00002.html
https://lists.opensuse.org/opensuse-security-announce/2014-06/msg00007.html
https://lists.opensuse.org/opensuse-security-announce/2014-06/msg00010.html
https://lists.opensuse.org/opensuse-security-announce/2014-06/msg00015.html
https://radare.today/technical-analysis-of-the-gnutls-hello-vulnerability/
https://rhn.redhat.com/errata/RHSA-2014-0594.html
https://rhn.redhat.com/errata/RHSA-2014-0595.html
https://rhn.redhat.com/errata/RHSA-2014-0684.html
https://rhn.redhat.com/errata/RHSA-2014-0815.html
https://secunia.com/advisories/58340
https://secunia.com/advisories/58598
https://secunia.com/advisories/58601
https://secunia.com/advisories/58642
https://secunia.com/advisories/59016
https://secunia.com/advisories/59021
https://secunia.com/advisories/59057
https://secunia.com/advisories/59086
https://secunia.com/advisories/59408
https://secunia.com/advisories/59838
https://secunia.com/advisories/60384
https://www.debian.org/security/2014/dsa-2944
https://www.gnutls.org/security.html
https://www.novell.com/support/kb/doc.php?id=7015302
https://www.novell.com/support/kb/doc.php?id=7015303
https://www.securityfocus.com/bid/67741
https://www.securitytracker.com/id/1030314
https://www.ubuntu.com/usn/USN-2229-1
https://www-01.ibm.com/support/docview.wss?uid=swg21678776
https://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5096155
https://bugzilla.redhat.com/show_bug.cgi?id=1101932
https://www.gitorious.org/gnutls/gnutls/commit/688ea6428a432c39203d00acd1af0e7684e5ddfd
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
