CVE-2021-25214

NameCVE-2021-25214
DescriptionIn BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-2647-1, DSA-4909-1
Debian Bugs987741

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
bind9 (PTS)stretch1:9.10.3.dfsg.P4-12.3+deb9u6vulnerable
stretch (security)1:9.10.3.dfsg.P4-12.3+deb9u9fixed
buster1:9.11.5.P4+dfsg-5.1+deb10u3vulnerable
buster (security)1:9.11.5.P4+dfsg-5.1+deb10u5fixed
bullseye, sid1:9.16.15-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
bind9sourcestretch1:9.10.3.dfsg.P4-12.3+deb9u9DLA-2647-1
bind9sourcebuster1:9.11.5.P4+dfsg-5.1+deb10u5DSA-4909-1
bind9source(unstable)1:9.16.15-1987741

Notes

https://kb.isc.org/docs/cve-2021-25214
https://gitlab.isc.org/isc-projects/bind9/commit/f68d4cba3321ed375bbc334e2333250893c4f587 (v9_16_15)
https://gitlab.isc.org/isc-projects/bind9/commit/f092fcee10a7e8b391747dbdd7e58243bff4f75c (v9_16_15)
https://gitlab.isc.org/isc-projects/bind9/commit/01a916abac22f87a248a7525d3e7408acac0804b (v9_16_15)

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