Описание
If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with an rdata size of 65512, that let's an (uint16_t) variable that is used to allocate space needed for the RR wrap (because total size > 65535), causing a heap overflow. The attacker can perform a controlled (RCE class) head write of up to 65509 bytes
| Релиз | Статус | Примечание |
|---|---|---|
| devel | needs-triage | |
| esm-apps-legacy/xenial | not-affected | |
| esm-apps/bionic | not-affected | |
| esm-apps/focal | not-affected | |
| esm-apps/jammy | not-affected | |
| esm-apps/noble | not-affected | |
| esm-apps/resolute | released | 4.14.0-1ubuntu0.1~esm1 |
| jammy | not-affected | |
| noble | not-affected | |
| questing | ignored | end of life, was needs-triage |
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EPSS
8.8 High
CVSS3
Связанные уязвимости
If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with an rdata size of 65512, that let's an (uint16_t) variable that is used to allocate space needed for the RR wrap (because total size > 65535), causing a heap overflow. The attacker can perform a controlled (RCE class) head write of up to 65509 bytes
If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with an rdata size of 65512, that let's an (uint16_t) variable that is used to allocate space needed for the RR wrap (because total size > 65535), causing a heap overflow. The attacker can perform a controlled (RCE class) head write of up to 65509 bytes
If NSD is configured as secondary for a zone, the primary of that zone ...
If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with an rdata size of 65512, that let's an (uint16_t) variable that is used to allocate space needed for the RR wrap (because total size > 65535), causing a heap overflow. The attacker can perform a controlled (RCE class) head write of up to 65509 bytes
EPSS
8.8 High
CVSS3