Input validation error in ISC BIND

1) Input validation error

EUVDB-ID: #VU33826

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-2015-4620

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.

name.c in named in ISC BIND 9.7.x through 9.9.x before 9.9.7-P1 and 9.10.x before 9.10.2-P2, when configured as a recursive resolver with DNSSEC validation, allows remote attackers to cause a denial of service (REQUIRE assertion failure and daemon exit) by constructing crafted zone data and then making a query for a name in that zone.

Mitigation

Install update from vendor's website.

Vulnerable software versions

ISC BIND: 9.7.0 - 9.7.7 rc1

CPE2.3

• cpe:2.3:a:isc:isc_bind:9.7.0:*:*:*:*:*:*:*
• cpe:2.3:a:isc:isc_bind:9.7.0a1:*:*:*:*:*:*:*
• cpe:2.3:a:isc:isc_bind:9.7.0a2:*:*:*:*:*:*:*

External links

https://lists.fedoraproject.org/pipermail/package-announce/2015-July/162040.html
https://lists.fedoraproject.org/pipermail/package-announce/2015-July/162286.html
https://lists.opensuse.org/opensuse-security-announce/2015-07/msg00013.html
https://lists.opensuse.org/opensuse-security-announce/2015-07/msg00050.html
https://lists.opensuse.org/opensuse-updates/2015-07/msg00038.html
https://marc.info/?l=bugtraq&m=143740940810833&w=2
https://rhn.redhat.com/errata/RHSA-2015-1443.html
https://rhn.redhat.com/errata/RHSA-2015-1471.html
https://www.debian.org/security/2015/dsa-3304
https://www.securityfocus.com/bid/75588
https://www.securitytracker.com/id/1032799
https://www.ubuntu.com/usn/USN-2669-1
https://kb.isc.org/article/AA-01267
https://kb.isc.org/article/AA-01305
https://kb.isc.org/article/AA-01306
https://kb.isc.org/article/AA-01307
https://kb.isc.org/article/AA-01438
https://kb.juniper.net/JSA10783
https://kc.mcafee.com/corporate/index?page=content&id=SB10124
https://security.gentoo.org/glsa/201510-01
https://security.netapp.com/advisory/ntap-20190903-0003/

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.