Improper Input Validation Affecting bind-libs package, versions <32:9.11.36-3.el8


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.71% (82nd percentile)

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  • Snyk IDSNYK-RHEL8-BINDLIBS-4279999
  • published29 Oct 2021
  • disclosed27 Oct 2021

Introduced: 27 Oct 2021

CVE-2021-25219  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade RHEL:8 bind-libs to version 32:9.11.36-3.el8 or higher.
This issue was patched in RHSA-2022:2092.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bind-libs package and not the bind-libs package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

In BIND 9.3.0 -> 9.11.35, 9.12.0 -> 9.16.21, and versions 9.9.3-S1 -> 9.11.35-S1 and 9.16.8-S1 -> 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.18 of the BIND 9.17 development branch, exploitation of broken authoritative servers using a flaw in response processing can cause degradation in BIND resolver performance. The way the lame cache is currently designed makes it possible for its internal data structures to grow almost infinitely, which may cause significant delays in client query processing.

CVSS Scores

version 3.1