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Servers and applications

CVE-2018-5737

A problem with the implementation of the new serve-stale feature in BIND 9.12 can lead to an assertion failure in rbtdb.c, even when stale-answer-enable is off. Additionally, problematic interaction between the serve-stale feature and NSEC aggressive negative caching can in some cases cause undesirable behavior from named, such as a recursion loop or excessive logging. Deliberate exploitation of…

Severity
High 7.5
Published
16 Jan 2019
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
11% in the next 30 daysHigher than 95% of CVEs. EPSS by FIRST, 10 Nov 2026
Weakness
CWE-617
Attack
Over the network · No login needed · No user action needed
Attacker can
Take it down
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Sources
NVD

Description

A problem with the implementation of the new serve-stale feature in BIND 9.12 can lead to an assertion failure in rbtdb.c, even when stale-answer-enable is off. Additionally, problematic interaction between the serve-stale feature and NSEC aggressive negative caching can in some cases cause undesirable behavior from named, such as a recursion loop or excessive logging. Deliberate exploitation of this condition could cause operational problems depending on the particular manifestation -- either degradation or denial of service. Affects BIND 9.12.0 and 9.12.1.

From NVD.

Affected software

SoftwareAffected versions
BIND 9Servers and applications · cpe:a:isc:bind
  • Version 9.12.0
  • Version 9.12.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2018-5737
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-5737