CVE-2019-6477
CVE-2019-6477 · TCP-pipelined queries can bypass tcp-clients limit
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
With pipelining enabled each incoming query on a TCP connection requires a similar resource allocation to a query received via UDP or via TCP without pipelining enabled. A client using a TCP-pipelined connection to a server could consume more resources than the server has been provisioned to handle. When a TCP connection with a large number of pipelined queries is closed, the load on the server releasing these multiple resources can cause it to become unresponsive, even for queries that can be answered authoritatively or from cache. (This is most likely to be perceived as an intermittent server problem).
CVSS 7.5 · Élevée · EPSS 4,1% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: system
Produits et versions concernés
bind9
- Versions du logiciel
- 9.11.6-P1 -> 9.11.12, 9.12.4-P1 -> 9.12.4-P2, 9.14.1 -> 9.14.7, and versions 9.11.5-S6 -> 9.11.12-S1 of BIND 9 Supported Preview Edition. Versions 9.15.0 -> 9.15.5 of the BIND 9.15 development branch are also affected: Concernée
Aucun correctif publié
bind9 Debian:12
- Plages de versions concernées
- ECOSYSTEM: < 1:9.11.14+dfsg-1
Mettez à jour vers 1:9.11.14+dfsg-1
bind9 Debian:13
- Plages de versions concernées
- ECOSYSTEM: < 1:9.11.14+dfsg-1
Mettez à jour vers 1:9.11.14+dfsg-1
bind9 Debian:14
- Plages de versions concernées
- ECOSYSTEM: < 1:9.11.14+dfsg-1
Mettez à jour vers 1:9.11.14+dfsg-1
bind9 Ubuntu:18.04:LTS
- Versions du logiciel
- 1:9.10.3.dfsg.P4-12.6ubuntu1
- 1:9.11.2.P1-1ubuntu2
- 1:9.11.2.P1-1ubuntu3
- 1:9.11.2.P1-1ubuntu4
- 1:9.11.2.P1-1ubuntu5
- 1:9.11.3+dfsg-1ubuntu1
- 1:9.11.3+dfsg-1ubuntu1.1
- 1:9.11.3+dfsg-1ubuntu1.2
- 1:9.11.3+dfsg-1ubuntu1.3
- 1:9.11.3+dfsg-1ubuntu1.5
- 1:9.11.3+dfsg-1ubuntu1.7
- 1:9.11.3+dfsg-1ubuntu1.8
- 1:9.11.3+dfsg-1ubuntu1.9
- 1:9.11.3+dfsg-1ubuntu1.10
- Plages de versions concernées
- ECOSYSTEM: < 1:9.11.3+dfsg-1ubuntu1.11
Mettez à jour vers 1:9.11.3+dfsg-1ubuntu1.11
Sources originales
- https://kb.isc.org/docs/cve-2019-6477
- https://www.synology.com/security/advisory/Synology_SA_19_39
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XGURMGQHX45KR4QDRCSUQHODUFOGNGAN/
- https://support.f5.com/csp/article/K15840535?utm_source=f5support&%3Butm_medium=RSS
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3DEMNZMKR57VQJCG5ZN55ZGTQRL2TFQ/
- https://www.debian.org/security/2020/dsa-4689
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html
- https://nvd.nist.gov/vuln/detail/CVE-2019-6477