Описание
When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service. The remedy is: upgrade to the patched 1.9.9 version. A workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version. We would like to thank Charles Howes for bringing this issue to our attention.
Пакеты
| Пакет | Статус | Версия исправления | Релиз | Тип |
|---|---|---|---|---|
| dnsdist | fixed | 1.9.9-1 | package | |
| dnsdist | not-affected | bookworm | package | |
| dnsdist | not-affected | bullseye | package |
Примечания
https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-02.html
https://github.com/PowerDNS/pdns/issues/15475
Fixed by: https://github.com/PowerDNS/pdns/commit/954eb1921699147b16f8bcd08029e37da3e789b9 (master)
https://github.com/PowerDNS/pdns/pull/15482
Fixed by: https://github.com/PowerDNS/pdns/commit/68edfd9be00f18101216eb394e3b18bd6feb77f4 (dnsdist-1.9.9)
Связанные уязвимости
When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service. The remedy is: upgrade to the patched 1.9.9 version. A workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version. We would like to thank Charles Howes for bringing this issue to our attention.
When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service. The remedy is: upgrade to the patched 1.9.9 version. A workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version. We would like to thank Charles Howes for bringing this issue to our attention.
When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service. The remedy is: upgrade to the patched 1.9.9 version. A workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version. We would like to thank Charles Howes for bringing this issue to our attention.
Уязвимость компонента nghttp2 Provider программного обеспечения PowerDNS DNSdist, позволяющая нарушителю вызвать отказ в обслуживании
