🛡️ CLSA-2022-1649170483 — bind9

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Fix CVE(s): CVE-2021-25220

  • SECURITY UPDATE: cache poisoning via bogus NS records
  • debian/patches/CVE-2021-25220.patch: tighten rules for acceptance of

records into the cache in lib/dns/resolver.c.

  • CVE-2021-25220

Affected software

CLSA-2022-1649170483 is recorded against 21 packages.

  • bind9 (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • bind9-doc (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • bind9-host (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • bind9utils (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • dnsutils (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • host (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • libbind-dev (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • libbind-export-dev (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • libbind9-140 (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • libdns-export162 (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • libdns162 (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • libirs-export141 (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • libirs141 (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • libisc-export160 (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • libisc160 (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • libisccc-export140 (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • libisccc140 (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • libisccfg-export140 (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • libisccfg140 (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • liblwres141 (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)
  • lwresd (fixed in 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2)

Timeline and source

Published on 5 April 2022 and last revised on 4 June 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

errata.cloudlinux.com (Advisory)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2022-04-05
Updated 2026-08-12
Modified 2026-06-04
Fix URL N/A

Affected Packages

Software From version Fixed in
bind9 — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
bind9-doc — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
bind9-host — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
bind9utils — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
dnsutils — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
host — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
libbind-dev — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
libbind-export-dev — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
libbind9-140 — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
libdns-export162 — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
libdns162 — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
libirs-export141 — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
libirs141 — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
libisc-export160 — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
libisc160 — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
libisccc-export140 — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
libisccc140 — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
libisccfg-export140 — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
libisccfg140 — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
liblwres141 — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2
lwresd — 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els2

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