#VU33963 Input validation error in ISC BIND - CVE-2011-1910
Vulnerability identifier: #VU33963
Vulnerability risk: Medium
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID:
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 service disruption.
Off-by-one error in named in ISC BIND 9.x before 9.7.3-P1, 9.8.x before 9.8.0-P2, 9.4-ESV before 9.4-ESV-R4-P1, and 9.6-ESV before 9.6-ESV-R4-P1 allows remote DNS servers to cause a denial of service (assertion failure and daemon exit) via a negative response containing large RRSIG RRsets.
Mitigation
Install update from vendor's website.
Vulnerable software versions
ISC BIND: 4.9.2 - 9.7.3
External links
https://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
https://lists.fedoraproject.org/pipermail/package-announce/2011-June/061082.html
https://lists.fedoraproject.org/pipermail/package-announce/2011-June/061401.html
https://lists.fedoraproject.org/pipermail/package-announce/2011-June/061405.html
https://marc.info/?l=bugtraq&m=142180687100892&w=2
https://osvdb.org/72540
https://secunia.com/advisories/44677
https://secunia.com/advisories/44719
https://secunia.com/advisories/44741
https://secunia.com/advisories/44744
https://secunia.com/advisories/44758
https://secunia.com/advisories/44762
https://secunia.com/advisories/44783
https://secunia.com/advisories/44929
https://security.freebsd.org/advisories/FreeBSD-SA-11:02.bind.asc
https://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.685026
https://support.apple.com/kb/HT5002
https://www.debian.org/security/2011/dsa-2244
https://www.kb.cert.org/vuls/id/795694
https://www.mandriva.com/security/advisories?name=MDVSA-2011:104
https://www.redhat.com/support/errata/RHSA-2011-0845.html
https://www.securityfocus.com/bid/48007
https://www.securitytracker.com/id?1025572
https://bugzilla.redhat.com/show_bug.cgi?id=708301
https://hermes.opensuse.org/messages/8699912
https://www.isc.org/software/bind/advisories/cve-2011-1910
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.
