UpHeron
All vulnerabilities

Servers and applications

CVE-2021-25219

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…

Severity
Medium 5.3
Published
27 Oct 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
9.11.36, 9.16.22, 9.17.19
Sources
NVD

Affected software

SoftwareAffected versions
BIND 9Servers and applications · cpe:a:isc:bind
  • From 9.17.0 before 9.17.19
  • Version 9.16.21-s1
  • Version 9.16.13-s1
  • Version 9.16.11-s1
All 24 release lines
  • From 9.3.0 before 9.11.36
  • Version 9.9.3-s1
  • Version 9.9.12-s1
  • Version 9.9.13-s1
  • Version 9.10.5-s1
  • Version 9.10.7-s1
  • Version 9.11.3-s1
  • Version 9.11.5-s3
  • Version 9.11.5-s5
  • Version 9.11.5-s6
  • Version 9.11.6-s1
  • Version 9.11.7-s1
  • Version 9.11.8-s1
  • Version 9.11.12-s1
  • Version 9.11.21-s1
  • Version 9.11.27-s1
  • Version 9.11.29-s1
  • Version 9.11.35-s1
  • From 9.12.0 before 9.16.22
  • Version 9.16.8-s1
  • Version 9.16.11-s1
  • Version 9.16.13-s1
  • Version 9.16.21-s1
  • From 9.17.0 before 9.17.19

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-25219
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-25219