CVE-2021-25214

A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly

Medium · published April 29, 2021

CVSS v3.1
6.5
EPSS
6%
Percentile
93.7
In the wild
Unconfirmed
What it is

In 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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.06455 · 93.7th percentile
Published
2021-04-29T00:55Z
EPSS history
Timeline
  • 29 APR 00:55Z
    A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly
    cvelistv5