Description
PowerDNS before 2.9.18, when running with an LDAP backend, does not properly escape LDAP queries, which allows remote attackers to cause a denial of service (failure to answer ldap questions) and possibly conduct an LDAP injection attack.
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 | pdns | 2.9.18-1 | — |
| Debian 13 | pdns | 2.9.18-1 | — |
| Debian 12 | pdns | 2.9.18-1 | — |
| Debian 3.1 | pdns | 2.9.17-13sarge1 | DSA-771-1 |
Advisories 1
- DSA-771-1 pdns - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- http://doc.powerdns.com/changelog.html#CHANGELOG-2-9-18
- SUSE-SR:2005:019 vendor-advisory
- 20050716 PowerDNS 2.9.18 fixes two security issues affecting users of LDAP mailing-list
- 1014504 vdb-entry
- 14290 vdb-entry