Description
parse/Csv2_parse.c in MaraDNS 1.3.03, and other versions before 1.4.03, does not properly handle hostnames that do not end in a "." (dot) character, which allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted csv2 zone file.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 11 | maradns | 1.4.03-1 | — |