Input validation error in bind (Alpine package)

1) Input validation error

EUVDB-ID: #VU32322

Risk: High

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-1286

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to a crash the entire system.

named in ISC BIND 9.x before 9.9.8-P4 and 9.10.x before 9.10.3-P4 allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a crafted signature record for a DNAME record, related to db.c and resolver.c.

Mitigation

Install update from vendor's website.

Vulnerable software versions

bind (Alpine package): 9.6.1-r0 - 9.10.3_p3-r1

CPE2.3

• cpe:2.3:o:alpine:bind_alpine_package:9.10.3_p3-r0:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:bind_alpine_package:9.10.0_p2-r0:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:bind_alpine_package:9.10.0_p1-r0:*:*:*:*:alpine_linux:*:

External links

http://git.alpinelinux.org/aports/commit/?id=cc2653729b75ff9137c3a4f50e2984a8d807cf41
http://git.alpinelinux.org/aports/commit/?id=8b571b68d5ba963a333609d0bf9fb345afa09238
http://git.alpinelinux.org/aports/commit/?id=f9aa3b90d2882bdc25d0159936a40252bef28990
http://git.alpinelinux.org/aports/commit/?id=042135a07668e262a438da14a580aa147d7fb7d3

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.