Input validation error in bind (Alpine package)

1) Input validation error

EUVDB-ID: #VU33930

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-2012-5166

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-P4, 9.8.x before 9.8.3-P4, 9.9.x before 9.9.1-P4, and 9.4-ESV and 9.6-ESV before 9.6-ESV-R7-P4 allows remote attackers to cause a denial of service (named daemon hang) via unspecified combinations of resource records.

Mitigation

Install update from vendor's website.

Vulnerable software versions

bind (Alpine package): 9.6.1-r0 - 9.8.4-r0

CPE2.3

• cpe:2.3:a:alpine:bind_alpine_package:9.6.1-r0:*:*:*:*:alpine_linux:*:1.10
• cpe:2.3:a:alpine:bind_alpine_package:9.7.1-r0:*:*:*:*:alpine_linux:*:2.0
• cpe:2.3:a:alpine:bind_alpine_package:9.7.3-r0:*:*:*:*:alpine_linux:*:2.1

External links

https://git.alpinelinux.org/aports/commit/?id=ee2712abd99d6dd7f9159ffbbb329e8296f2dd24
https://git.alpinelinux.org/aports/commit/?id=c2bb0a793c999d482e8be33cc3eab8ed16eeb03e
https://git.alpinelinux.org/aports/commit/?id=83db3c31e399abdaa03f971945d1df3c5530a50f

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.