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Resource Exhaustion Affecting bind-pkcs11-libs package, versions <32:9.11.4-16.P2.el7

Severity

 Recommended
medium

Based on CentOS security rating

    Threat Intelligence

    EPSS
    1.71% (89th percentile)

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  • Snyk ID SNYK-CENTOS7-BINDPKCS11LIBS-2157297
  • published 26 Jul 2021
  • disclosed 20 Nov 2019
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Introduced: 20 Nov 2019

CVE-2019-6477 Open this link in a new tab
CWE-400 Open this link in a new tab

How to fix?

Upgrade Centos:7 bind-pkcs11-libs to version 32:9.11.4-16.P2.el7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bind-pkcs11-libs package and not the bind-pkcs11-libs package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

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).

References

CVSS Scores

version 3.1
Expand this section

NVD

7.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
Expand this section

SUSE

7.5 high