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CVE-2026-63074

Опубликовано: 25 авг. 2026
Источник: ubuntu
Приоритет: low
EPSS Низкий
CVSS3: 5.9

Описание

Issue summary: The OpenSSL Certificate Management Protocol (CMP) caches additional certificates (extraCerts) sent in a CMP message, but never expunges them (for instance if they are invalid). If a server reuses an OSSL_CMP_CTX frequently, this cache of extraCerts may grow unboundedly, and a malicious client may flood a CMP server with requests driving this growth. Impact summary: Users utilizing a CMP server that reuses a single OSSL_CMP_CTX for the lifetime of a server process may observe unbounded memory growth in the event a malicious client repeatedly sends requests containing unique extra certificates, which may lead to OOM conditions. CWE: CWE-770: Allocation of Resources Without Limits or Throttling Description: If a remote user sends CMP messages to a server with a list of extraCerts and the message is rejected, the extraCerts from the message remains in the server contexts untrusted certificate stack. This exposes servers with long lived ctx objects to Denial of Service a...

РелизСтатусПримечание
devel

needs-triage

esm-apps-legacy/xenial

not-affected

3.0+ only
esm-apps/bionic

not-affected

3.0+ only
esm-infra/focal

not-affected

3.0+ only
jammy

not-affected

3.0+ only
noble

needs-triage

resolute

needs-triage

stonking

needs-triage

upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

needs-triage

jammy

DNE

noble

DNE

resolute

needs-triage

stonking

needs-triage

upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

not-affected

uses system openssl
esm-apps-legacy/xenial

needs-triage

esm-apps/bionic

needs-triage

esm-apps/focal

not-affected

uses system openssl
esm-apps/jammy

not-affected

3.0+ only
esm-apps/noble

not-affected

uses system openssl
esm-apps/resolute

not-affected

uses system openssl
esm-infra-legacy/trusty

not-affected

uses system openssl
jammy

not-affected

3.0+ only
noble

not-affected

uses system openssl

Показывать по

РелизСтатусПримечание
devel

not-affected

4.0.3-1ubuntu1
esm-infra-legacy/trusty

not-affected

3.0+ only
esm-infra-legacy/xenial

not-affected

3.0+ only
esm-infra/bionic

not-affected

3.0+ only
esm-infra/focal

not-affected

3.0+ only
fips-preview/jammy

needed

fips-updates/bionic

not-affected

3.0+ only
fips-updates/focal

not-affected

3.0+ only
fips-updates/jammy

released

3.0.2-0ubuntu1.29+Fips1
fips-updates/xenial

not-affected

3.0+ only

Показывать по

РелизСтатусПримечание
devel

DNE

fips-preview/jammy

needs-triage

fips-updates/jammy

needs-triage

fips-updates/noble

released

3.0.13-0ubuntu3.15+Fips1
jammy

DNE

noble

DNE

resolute

DNE

stonking

DNE

upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

DNE

esm-infra/bionic

not-affected

3.0+ only
jammy

DNE

noble

DNE

resolute

DNE

stonking

DNE

upstream

needs-triage

Показывать по

EPSS

Процентиль: 48%
0.00588
Низкий

5.9 Medium

CVSS3

Связанные уязвимости

CVSS3: 7.5
redhat
3 месяца назад

Issue summary: The OpenSSL Certificate Management Protocol (CMP) caches additional certificates (extraCerts) sent in a CMP message, but never expunges them (for instance if they are invalid). If a server reuses an OSSL_CMP_CTX frequently, this cache of extraCerts may grow unboundedly, and a malicious client may flood a CMP server with requests driving this growth. Impact summary: Users utilizing a CMP server that reuses a single OSSL_CMP_CTX for the lifetime of a server process may observe unbounded memory growth in the event a malicious client repeatedly sends requests containing unique extra certificates, which may lead to OOM conditions. CWE: CWE-770: Allocation of Resources Without Limits or Throttling Description: If a remote user sends CMP messages to a server with a list of extraCerts and the message is rejected, the extraCerts from the message remains in the server contexts untrusted certificate stack. This exposes servers with long lived ctx objects to Denial of Service a...

CVSS3: 5.9
nvd
3 месяца назад

Issue summary: The OpenSSL Certificate Management Protocol (CMP) caches additional certificates (extraCerts) sent in a CMP message, but never expunges them (for instance if they are invalid). If a server reuses an OSSL_CMP_CTX frequently, this cache of extraCerts may grow unboundedly, and a malicious client may flood a CMP server with requests driving this growth. Impact summary: Users utilizing a CMP server that reuses a single OSSL_CMP_CTX for the lifetime of a server process may observe unbounded memory growth in the event a malicious client repeatedly sends requests containing unique extra certificates, which may lead to OOM conditions. CWE: CWE-770: Allocation of Resources Without Limits or Throttling Description: If a remote user sends CMP messages to a server with a list of extraCerts and the message is rejected, the extraCerts from the message remains in the server contexts untrusted certificate stack. This exposes servers with long lived ctx objects to Denial of Service a

msrc
3 месяца назад

CMP Indefinite Cache Growth of ExtraCerts

CVSS3: 5.9
debian
3 месяца назад

Issue summary: The OpenSSL Certificate Management Protocol (CMP) cache ...

CVSS3: 5.9
github
3 месяца назад

Issue summary: The OpenSSL Certificate Management Protocol (CMP) caches additional certificates (extraCerts) sent in a CMP message, but never expunges them (for instance if they are invalid). If a server reuses an OSSL_CMP_CTX frequently, this cache of extraCerts may grow unboundedly, and a malicious client may flood a CMP server with requests driving this growth. Impact summary: Users utilizing a CMP server that reuses a single OSSL_CMP_CTX for the lifetime of a server process may observe unbounded memory growth in the event a malicious client repeatedly sends requests containing unique extra certificates, which may lead to OOM conditions. CWE: CWE-770: Allocation of Resources Without Limits or Throttling Description: If a remote user sends CMP messages to a server with a list of extraCerts and the message is rejected, the extraCerts from the message remains in the server contexts untrusted certificate stack. This exposes servers with long lived ctx objects to Denial of Servic...

EPSS

Процентиль: 48%
0.00588
Низкий

5.9 Medium

CVSS3