Assertion failure in bind (Alpine package)

Published: 2018-08-11
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-5740
Exploitation vector Network
Public exploit N/A
Vulnerable software
bind (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Assertion failure

EUVDB-ID: #VU14291

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-5740

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No


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

The vulnerability exists due to INSIST assertion failure in name.c when processing recursive queries. A remote attacker can trigger denial of service conditions if the affected server is configured with enabled "deny-answer-aliases" feature.


Install update from vendor's website.

Vulnerable software versions

bind (Alpine package): 9.7.1-r0 - 9.10.8-r0

External links

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.