Buffer overflow in bind (Alpine package)

1) Buffer overflow

EUVDB-ID: #VU31837

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-0591

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The query_findclosestnsec3 function in query.c in named in ISC BIND 9.6, 9.7, and 9.8 before 9.8.6-P2 and 9.9 before 9.9.4-P2, and 9.6-ESV before 9.6-ESV-R10-P2, allows remote attackers to cause a denial of service (INSIST assertion failure and daemon exit) via a crafted DNS query to an authoritative nameserver that uses the NSEC3 signing feature.

Mitigation

Install update from vendor's website.

Vulnerable software versions

bind (Alpine package): 9.9.3_p2-r0 - 9.9.4_p1-r1

CPE2.3

• cpe:2.3:o:alpine:bind_alpine_package:9.9.4_p1-r1:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:bind_alpine_package:9.9.4_p1-r0:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:bind_alpine_package:9.9.3_p2-r0:*:*:*:*:alpine_linux:*:

External links

http://git.alpinelinux.org/aports/commit/?id=ee78239969c5f8cd04ada611b76ac64eee6c3e9c
http://git.alpinelinux.org/aports/commit/?id=cca76935cde45957a76f70701e381379efd0813b
http://git.alpinelinux.org/aports/commit/?id=605940ad82635dced8c63ab3069aca84a858795c
http://git.alpinelinux.org/aports/commit/?id=b54d719755e8d7368fcce3f0d0ae3597ae5fe78b

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.