CVE-2023-6516
CVE-2023-6516 · Specific recursive query patterns may lead to an out-of-memory condition
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To keep its cache database efficient, `named` running as a recursive resolver occasionally attempts to clean up the database. It uses several methods, including some that are asynchronous: a small chunk of memory pointing to the cache element that can be cleaned up is first allocated and then queued for later processing. It was discovered that if the resolver is continuously processing query patterns triggering this type of cache-database maintenance, `named` may not be able to handle the cleanup events in a timely manner. This in turn enables the list of queued cleanup events to grow infinitely large over time, allowing the configured `max-cache-size` limit to be significantly exceeded. This issue affects BIND 9 versions 9.16.0 through 9.16.45 and 9.16.8-S1 through 9.16.45-S1.
CVSS 7.5 · Hoch · EPSS 1,1% · Korrektur verfügbar
- Veröffentlicht
- Aktualisiert
Technologie-Stack: system
Betroffene Produkte und Versionen
bind 9
- Softwareversionen
- ≥ 9.16.0, ≤ 9.16.45: Betroffen (custom)
- ≥ 9.16.8-S1, ≤ 9.16.45-S1: Betroffen (custom)
Keine Korrektur veröffentlicht
bind9 Debian:12
- Betroffene Versionsbereiche
- ECOSYSTEM: < 1:9.17.19-1
Auf 1:9.17.19-1 aktualisieren
bind9 Debian:13
- Betroffene Versionsbereiche
- ECOSYSTEM: < 1:9.17.19-1
Auf 1:9.17.19-1 aktualisieren
bind9 Debian:14
- Betroffene Versionsbereiche
- ECOSYSTEM: < 1:9.17.19-1
Auf 1:9.17.19-1 aktualisieren
bind9 Ubuntu:20.04:LTS
- Softwareversionen
- 1:9.11.5.P4+dfsg-5.1ubuntu2
- 1:9.11.5.P4+dfsg-5.1ubuntu3
- 1:9.11.5.P4+dfsg-5.1ubuntu4
- 1:9.11.5.P4+dfsg-5.1ubuntu5
- 1:9.11.14+dfsg-1ubuntu1
- 1:9.11.14+dfsg-3ubuntu1
- 1:9.16.0-1ubuntu3
- 1:9.16.0-1ubuntu4
- 1:9.16.0-1ubuntu5
- 1:9.16.1-0ubuntu1
- 1:9.16.1-0ubuntu2
- 1:9.16.1-0ubuntu2.1
- 1:9.16.1-0ubuntu2.2
- 1:9.16.1-0ubuntu2.3
- 1:9.16.1-0ubuntu2.4
- 1:9.16.1-0ubuntu2.6
- 1:9.16.1-0ubuntu2.7
- 1:9.16.1-0ubuntu2.8
- 1:9.16.1-0ubuntu2.9
- 1:9.16.1-0ubuntu2.10
- 1:9.16.1-0ubuntu2.11
- 1:9.16.1-0ubuntu2.12
- 1:9.16.1-0ubuntu2.14
- 1:9.16.1-0ubuntu2.15
- 1:9.16.1-0ubuntu2.16
- Betroffene Versionsbereiche
- ECOSYSTEM: < 1:9.16.48-0ubuntu0.20.04.1
Auf 1:9.16.48-0ubuntu0.20.04.1 aktualisieren
Originalquellen
- https://kb.isc.org/docs/cve-2023-6516
- http://www.openwall.com/lists/oss-security/2024/02/13/1
- https://lists.fedoraproject.org/archives/list/[email protected]/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/
- https://security.netapp.com/advisory/ntap-20240503-0008/
- https://nvd.nist.gov/vuln/detail/CVE-2023-6516