Vulnerability identifier: #VU33932

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-4244

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ISC BIND
Server applications / DNS servers

Vendor: ISC

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

ISC BIND 9.x before 9.7.6-P3, 9.8.x before 9.8.3-P3, 9.9.x before 9.9.1-P3, and 9.4-ESV and 9.6-ESV before 9.6-ESV-R7-P3 allows remote attackers to cause a denial of service (assertion failure and named daemon exit) via a query for a long resource record.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ISC BIND: 4.9.2 - 9.7.6-P2

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External links
http://lists.apple.com/archives/security-announce/2013/Sep/msg00002.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-September/087697.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-September/087703.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-September/088381.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00021.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00022.html
http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00007.html
http://marc.info/?l=bugtraq&m=141879471518471&w=2
http://rhn.redhat.com/errata/RHSA-2012-1266.html
http://rhn.redhat.com/errata/RHSA-2012-1267.html
http://rhn.redhat.com/errata/RHSA-2012-1268.html
http://rhn.redhat.com/errata/RHSA-2012-1365.html
http://secunia.com/advisories/50560
http://secunia.com/advisories/50579
http://secunia.com/advisories/50582
http://secunia.com/advisories/50645
http://secunia.com/advisories/50673
http://secunia.com/advisories/51096
http://support.apple.com/kb/HT5880
http://www.debian.org/security/2012/dsa-2547
http://www.mandriva.com/security/advisories?name=MDVSA-2012:152
http://www.securityfocus.com/bid/55522
http://www.ubuntu.com/usn/USN-1566-1
http://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04952488
http://kb.isc.org/article/AA-00778

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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.