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Spoofing replies to Recursor might mark an IP of an authoritative server as not supporting EDNS, causing valdiation of DNSSEC records served by that server to fail.
1 affected package
pdns-recursor
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| pdns-recursor | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
An invalid zone might pass ZONEMD validation while it should not. This is only relevant if ZoneToCache is configured with ZONEMD validation.
1 affected package
pdns-recursor
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| pdns-recursor | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
This fix provides extra hardening for the 5.4.x branch by doing extra validation of incoming answers from authoritative servers.
1 affected package
pdns-recursor
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| pdns-recursor | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
Incomplete validation of the SOA record present in a catalog zone might lead to a crash.
1 affected package
pdns-recursor
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| pdns-recursor | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to a crash of the Recursor due to insuffcient input validation.
1 affected package
pdns-recursor
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| pdns-recursor | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
ECS zero scoped answers are stored in the packet cache while they should not. This impacts only configurations that have ECS enabled;
1 affected package
pdns-recursor
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| pdns-recursor | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to cache poisoning.
1 affected package
pdns-recursor
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| pdns-recursor | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.
3 affected packages
dnsdist, pdns, pdns-recursor
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| dnsdist | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
| pdns | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
| pdns-recursor | Not affected | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
If you use the zoneToCache function with a malicious authoritative server, an attacker can send a zone that result in a null pointer dereference, caused by a missing consistency check and leading to a denial of service.
1 affected package
pdns-recursor
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| pdns-recursor | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
An RPZ sent by a malicious authoritative server can result in a null pointer dereference, caused by a missing consistency check and leading to a denial of service.
1 affected package
pdns-recursor
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| pdns-recursor | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |