7.5

CVE-2019-6477

TCP-pipelined queries can bypass tcp-clients limit

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).
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Isc ≫ Bind Version >= 9.11.7 <= 9.11.12
Isc ≫ Bind Version >= 9.14.1 <= 9.14.7
Isc ≫ Bind Version >= 9.15.0 <= 9.15.5
Isc ≫ Bind Version9.11.5 Updates6 SwEditionsupported_preview
Isc ≫ Bind Version9.11.6 Updatep1
Isc ≫ Bind Version9.11.6 Updaterc1
Isc ≫ Bind Version9.11.12 Updates1 SwEditionsupported_preview
Isc ≫ Bind Version9.12.4 Updatep1
Isc ≫ Bind Version9.12.4 Updatep2
Fedoraproject ≫ Fedora Version30
Fedoraproject ≫ Fedora Version31
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 4.02% 0.893
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd@nist.gov 5 10 2.9
AV:N/AC:L/Au:N/C:N/I:N/A:P
security-officer@isc.org 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-400 Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource.

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html
https://kb.isc.org/docs/cve-2019-6477
Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3DEMNZMKR57VQJCG5ZN55ZGTQRL2TFQ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XGURMGQHX45KR4QDRCSUQHODUFOGNGAN/
https://support.f5.com/csp/article/K15840535?utm_source=f5support&amp%3Butm_medium=RSS
https://www.debian.org/security/2020/dsa-4689
https://www.synology.com/security/advisory/Synology_SA_19_39
Third Party Advisory