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.
CVSS Details
- CVSS 3.1 Base Score: 5.9
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade bind | Jan 16, 2019 | Jan 16, 2019 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jan 16, 2019 |
| Dns Bind | — | Upgrade ISC BIND to latest version | May 23, 2018 | May 23, 2018 |
| Freebsd | — | Upgrade bind912 | May 22, 2018 | May 21, 2018 |
| Suse | — | Upgrade libirs1601Upgrade libns1604Upgrade libisc1606Upgrade python3-bindUpgrade bind-utilsUpgrade bindUpgrade libisccfg1600Upgrade bind-develUpgrade libisccc1600Upgrade libdns1605Upgrade bind-chrootenvUpgrade libirs-develUpgrade libbind9-1600Upgrade bind-doc | Feb 4, 2022 | May 18, 2018 |
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