Input validation error in ISC BIND

1) Input validation error

EUVDB-ID: #VU33932

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-4244

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

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

CPE2.3

• cpe:2.3:a:isc:isc_bind:4.9.2:*:*:*:*:*:*:*
• cpe:2.3:a:isc:isc_bind:4.9.3:*:*:*:*:*:*:*
• cpe:2.3:a:isc:isc_bind:4.9.4:*:*:*:*:*:*:*

External links

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

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.