Input validation error in ISC BIND



| Updated: 2020-08-04
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2011-1910
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 ISC BIND
Server applications / DNS servers

Vendor ISC

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU33963

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: CVE-2011-1910

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

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

CPE2.3 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.

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.



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