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An attacker can send a crafted EDNS OPT record that will be ignored by DNSdist’s filtering rules, but will be rewritten as a valid OPT record when EDNS Client Subnet is inserted, causing the backend to see the EDNS option(s) that...
1 affected package
dnsdist
| 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 |
An attacker can send crafted DNS over HTTP/3 queries, triggering an exception that prevents some buffer from being freed right away. The buffer will be freed at the end of the QUIC connection, but on some setups it might be...
1 affected package
dnsdist
| 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 |
An out-of-bounds read might happen when SetMacAddrAction is used, potentially resulting in uninitialized memory being sent over the network or a crash.
1 affected package
dnsdist
| 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 |
An attacker might be able to cause outgoing TCP connections to backend to be stuck until a timeout occurs instead of being released immediately, by sending IXFR queries. This could be used to cause a denial of service if there is...
1 affected package
dnsdist
| 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 |
An attacker might be able to delay the processing of DoH3 queries by sending DoH3 GET queries with an invalid DATA frame.
1 affected package
dnsdist
| 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 |
An attacker sending a large number of crafted DNS queries might be able to trigger a dynamic block being inserted with a value causing invalid output to be produced in the prometheus endpoint. The prometheus endpoint will then be...
1 affected package
dnsdist
| 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 |
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 |
When a provide-xfr is given with a tls-auth-name, a secondary requesting a transfer should provide a client certificate with that name. However, no client certificate is needed when the request comes in over TLS over the regular...
1 affected package
nsd
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| nsd | Fixed | Not affected | Not affected | Not affected | Not affected |
Some fixes available 5 of 6
NSD version 4.14.0 introduced a bug where a specially crafted APL RR, with an adflength larger than permitted for the address family will overwrite the stack when the zone is written to disk, with a maximum of 111...
1 affected package
nsd
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| nsd | Fixed | Fixed | Fixed | Fixed | Fixed |
Some fixes available 1 of 2
NSD from version 4.13.0 has a heap use-after-free bug in logging errors on TLS connections, causing a crash of the server process, which can be triggered trivially by sending a DNS query over a DoT connection, and closing the...
1 affected package
nsd
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| nsd | Fixed | Not affected | Not affected | Not affected | Not affected |