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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2023-2911

Exceeding the recursive-clients quota may cause named to terminate unexpectedly when stale-answer-client-timeout is set to 0

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Status
Published
Published
Updated
Assigning organization
isc

Description

If the `recursive-clients` quota is reached on a BIND 9 resolver configured with both `stale-answer-enable yes;` and `stale-answer-client-timeout 0;`, a sequence of serve-stale-related lookups could cause `named` to loop and terminate unexpectedly due to a stack overflow. This issue affects BIND 9 versions 9.16.33 through 9.16.41, 9.18.7 through 9.18.15, 9.16.33-S1 through 9.16.41-S1, and 9.18.11-S1 through 9.18.15-S1.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

ISC BIND 9

Default version status: unaffected

  • 9.16.33 to ≤ 9.16.41affected
  • 9.18.7 to ≤ 9.18.15affected
  • 9.16.33-S1 to ≤ 9.16.41-S1affected
  • 9.18.11-S1 to ≤ 9.18.15-S1affected

References