Description
Dnsmasq before 2.21 allows remote attackers to poison the DNS cache via answers to queries that were not made by Dnsmasq.
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 14 | dnsmasq | 2.21 | — |
| Debian 13 | dnsmasq | 2.21 | — |
| Debian 12 | dnsmasq | 2.21 | — |
References
- dnsmasq-dns-cache-poisoning(19826) vdb-entry
- 14691 third-party-advisory
- http://www.thekelleys.org.uk/dnsmasq/CHANGELOG
- 12897 vdb-entry