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Alma Linux: CVE-2022-3924: Moderate: bind security and bug fix update (ALSA-2023-2261)

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Alma Linux: CVE-2022-3924: Moderate: bind security and bug fix update (ALSA-2023-2261)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
01/26/2023
Created
05/15/2023
Added
05/15/2023
Modified
04/22/2024

Description

This issue can affect BIND 9 resolvers with `stale-answer-enable yes;` that also make use of the option `stale-answer-client-timeout`, configured with a value greater than zero. If the resolver receives many queries that require recursion, there will be a corresponding increase in the number of clients that are waiting for recursion to complete. If there are sufficient clients already waiting when a new client query is received so that it is necessary to SERVFAIL the longest waiting client (see BIND 9 ARM `recursive-clients` limit and soft quota), then it is possible for a race to occur between providing a stale answer to this older client and sending an early timeout SERVFAIL, which may cause an assertion failure. This issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through 9.16.36-S1.

Solution(s)

  • alma-upgrade-bind
  • alma-upgrade-bind-chroot
  • alma-upgrade-bind-devel
  • alma-upgrade-bind-dnssec-doc
  • alma-upgrade-bind-dnssec-utils
  • alma-upgrade-bind-doc
  • alma-upgrade-bind-libs
  • alma-upgrade-bind-license
  • alma-upgrade-bind-utils
  • alma-upgrade-python3-bind

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