Assertion failure in bind (Alpine package)

1) Assertion failure

EUVDB-ID: #VU7227

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-2017-3137

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation when processing query response containing CNAME or DNAME resource records in an unusual order in BIND. A remote attacker can trigger assertion failure and crash BIND application.

Mitigation

Install update from vendor's website.

Vulnerable software versions

bind (Alpine package): 9.10.4_p6-r0

CPE2.3

• cpe:2.3:o:alpine:bind_alpine_package:9.10.4_p6-r0:*:*:*:*:alpine_linux:*:3.2

External links

https://git.alpinelinux.org/aports/commit/?id=2bfbca724f8810840c93ea17e972afbb84233739
https://git.alpinelinux.org/aports/commit/?id=b3fd1eb4e8e0f578e1fbaf76d9903a9012274dee
https://git.alpinelinux.org/aports/commit/?id=4105cc0c96fb20b95bd9f54160b62af7ca88cd72
https://git.alpinelinux.org/aports/commit/?id=678f234c682be06018570ae854e6749b50a56528
https://git.alpinelinux.org/aports/commit/?id=e049b1d35bb80fed35d73f2ddbdf64484041442d
https://git.alpinelinux.org/aports/commit/?id=e1c82f92f256c814e32451da7b302a8d83f94800
https://git.alpinelinux.org/aports/commit/?id=2542b4ba677184fdcb83fc2fdf9dcf5c2dd6fbb8
https://git.alpinelinux.org/aports/commit/?id=ec799e60eab57b781fa19ba2f7e79f65b7ea4cbe

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.