Описание
The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | ignored | end of standard support |
| devel | released | 1:9.18.24-0ubuntu1 |
| esm-infra-legacy/trusty | not-affected | 1:9.9.5.dfsg-3ubuntu0.19+esm12 |
| esm-infra/bionic | released | 1:9.11.3+dfsg-1ubuntu1.19+esm3 |
| esm-infra/focal | not-affected | 1:9.16.48-0ubuntu0.20.04.1 |
| esm-infra/xenial | released | 1:9.10.3.dfsg.P4-8ubuntu1.19+esm8 |
| focal | released | 1:9.16.48-0ubuntu0.20.04.1 |
| jammy | released | 1:9.18.18-0ubuntu0.22.04.2 |
| mantic | released | 1:9.18.18-0ubuntu2.1 |
| noble | released | 1:9.18.24-0ubuntu1 |
Показывать по
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | DNE | |
| devel | DNE | |
| esm-infra/focal | needs-triage | |
| focal | ignored | end of standard support, was needs-triage |
| jammy | needs-triage | |
| mantic | DNE | |
| noble | DNE | |
| oracular | DNE | |
| plucky | DNE | |
| trusty | DNE |
Показывать по
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | ignored | end of standard support |
| devel | released | 2.90-1 |
| esm-infra-legacy/trusty | needs-triage | |
| esm-infra/bionic | released | 2.90-0ubuntu0.18.04.1+esm1 |
| esm-infra/focal | not-affected | 2.90-0ubuntu0.20.04.1 |
| esm-infra/xenial | released | 2.90-0ubuntu0.16.04.1+esm1 |
| focal | released | 2.90-0ubuntu0.20.04.1 |
| jammy | released | 2.90-0ubuntu0.22.04.1 |
| mantic | released | 2.90-0ubuntu0.23.10.1 |
| noble | released | 2.90-1 |
Показывать по
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | not-affected | code not present |
| devel | needs-triage | |
| esm-apps/noble | needs-triage | |
| esm-infra-legacy/trusty | not-affected | code not present |
| esm-infra/bionic | needs-triage | |
| esm-infra/focal | not-affected | code not present |
| esm-infra/xenial | not-affected | code not present |
| focal | not-affected | code not present |
| jammy | not-affected | code not present |
| mantic | ignored | end of life, was needs-triage |
Показывать по
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | ignored | end of standard support |
| devel | not-affected | 5.7.1-1 |
| esm-apps/bionic | needs-triage | |
| esm-apps/focal | needs-triage | |
| esm-apps/jammy | needs-triage | |
| esm-apps/noble | not-affected | 5.7.1-1 |
| esm-apps/xenial | needs-triage | |
| focal | ignored | end of standard support, was needs-triage |
| jammy | needs-triage | |
| mantic | ignored | end of life, was needs-triage |
Показывать по
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | ignored | end of standard support |
| devel | not-affected | 4.9.3-1 |
| esm-apps/bionic | needs-triage | |
| esm-apps/focal | needs-triage | |
| esm-apps/jammy | needs-triage | |
| esm-apps/noble | not-affected | 4.9.3-1 |
| esm-apps/xenial | needs-triage | |
| focal | ignored | end of standard support, was needs-triage |
| jammy | needs-triage | |
| mantic | ignored | end of life, was needs-triage |
Показывать по
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | ignored | end of standard support |
| devel | released | 1.19.1-1ubuntu1 |
| esm-infra-legacy/trusty | needs-triage | |
| esm-infra/bionic | needs-triage | |
| esm-infra/focal | not-affected | 1.9.4-2ubuntu1.5 |
| esm-infra/xenial | needs-triage | |
| focal | released | 1.9.4-2ubuntu1.5 |
| jammy | released | 1.13.1-1ubuntu5.4 |
| mantic | released | 1.17.1-2ubuntu0.1 |
| noble | released | 1.19.1-1ubuntu1 |
Показывать по
Ссылки на источники
7.5 High
CVSS3
Связанные уязвимости
The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.
The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.
MITRE: CVE-2023-50868 NSEC3 closest encloser proof can exhaust CPU
The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 whe ...
The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.
7.5 High
CVSS3