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CVE-2026-35188

Опубликовано: 09 июн. 2026
Источник: ubuntu
Приоритет: medium
EPSS Низкий
CVSS3: 5

Описание

Issue summary: A malicious server can exploit TLS OCSP stapling by delivering a crafted response through the status_request extension, triggering a double-free in the client's certificate verification path. Impact summary: Successful exploitation allows an attacker to corrupt heap memory via a double-free, potentially leading to a Denial of Service or possibly an attacker controlled code execution or other undefined behavior. If OCSP stapling is enabled and the TLS client connects to a malicious server, a crafted OCSP stapled response can trigger a double free in the TLS client when the stapled response is checked. The OCSP stapling is not enabled by default. Reliable code execution through a double-free is technically complex and highly environment-dependent but the Denial of Service impact is straightforward to achieve, warranting Moderate severity. No FIPS modules are affected by this issue as the affected code is outside the OpenSSL FIPS module boundary.

РелизСтатусПримечание
devel

not-affected

3.6+ only
esm-apps-legacy/xenial

not-affected

3.6+ only
esm-apps/bionic

not-affected

3.6+ only
esm-infra/focal

not-affected

3.6+ only
jammy

not-affected

3.6+ only
noble

not-affected

3.6+ only
questing

not-affected

3.6+ only
resolute

not-affected

3.6+ only
upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

not-affected

uses system openssl
esm-apps-legacy/xenial

not-affected

3.6+ only
esm-apps/bionic

not-affected

3.6+ only
esm-apps/focal

not-affected

uses system openssl
esm-apps/jammy

needed

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

needed

noble

not-affected

uses system openssl

Показывать по

РелизСтатусПримечание
devel

not-affected

3.6+ only
esm-infra-legacy/trusty

not-affected

3.6+ only
esm-infra-legacy/xenial

not-affected

3.6+ only
esm-infra/bionic

not-affected

3.6+ only
esm-infra/focal

not-affected

3.6+ only
fips-preview/jammy

not-affected

3.6+ only
fips-updates/bionic

not-affected

3.6+ only
fips-updates/focal

not-affected

3.6+ only
fips-updates/jammy

not-affected

3.6+ only
fips-updates/xenial

not-affected

3.6+ only

Показывать по

РелизСтатусПримечание
devel

DNE

fips-preview/jammy

not-affected

3.6+ only
fips-updates/jammy

not-affected

3.6+ only
fips-updates/noble

not-affected

3.6+ only
jammy

DNE

noble

DNE

questing

DNE

resolute

DNE

upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

DNE

esm-infra/bionic

not-affected

3.6+ only
jammy

DNE

noble

DNE

questing

DNE

resolute

DNE

upstream

needs-triage

Показывать по

Ссылки на источники

EPSS

Процентиль: 16%
0.00245
Низкий

5 Medium

CVSS3

Связанные уязвимости

CVSS3: 5.9
redhat
2 месяца назад

Issue summary: A malicious server can exploit TLS OCSP stapling by delivering a crafted response through the status_request extension, triggering a double-free in the client's certificate verification path. Impact summary: Successful exploitation allows an attacker to corrupt heap memory via a double-free, potentially leading to a Denial of Service or possibly an attacker controlled code execution or other undefined behavior. If OCSP stapling is enabled and the TLS client connects to a malicious server, a crafted OCSP stapled response can trigger a double free in the TLS client when the stapled response is checked. The OCSP stapling is not enabled by default. Reliable code execution through a double-free is technically complex and highly environment-dependent but the Denial of Service impact is straightforward to achieve, warranting Moderate severity. No FIPS modules are affected by this issue as the affected code is outside the OpenSSL FIPS module boundary.

CVSS3: 5
nvd
2 месяца назад

Issue summary: A malicious server can exploit TLS OCSP stapling by delivering a crafted response through the status_request extension, triggering a double-free in the client's certificate verification path. Impact summary: Successful exploitation allows an attacker to corrupt heap memory via a double-free, potentially leading to a Denial of Service or possibly an attacker controlled code execution or other undefined behavior. If OCSP stapling is enabled and the TLS client connects to a malicious server, a crafted OCSP stapled response can trigger a double free in the TLS client when the stapled response is checked. The OCSP stapling is not enabled by default. Reliable code execution through a double-free is technically complex and highly environment-dependent but the Denial of Service impact is straightforward to achieve, warranting Moderate severity. No FIPS modules are affected by this issue as the affected code is outside the OpenSSL FIPS module boundary.

msrc
5 дней назад

Double-free When Checking OCSP Stapled Response

CVSS3: 5
debian
2 месяца назад

Issue summary: A malicious server can exploit TLS OCSP stapling by del ...

CVSS3: 5
github
2 месяца назад

Issue summary: A malicious server can exploit TLS OCSP stapling by delivering a crafted response through the status_request extension, triggering a double-free in the client's certificate verification path. Impact summary: Successful exploitation allows an attacker to corrupt heap memory via a double-free, potentially leading to a Denial of Service or possibly an attacker controlled code execution or other undefined behavior. If OCSP stapling is enabled and the TLS client connects to a malicious server, a crafted OCSP stapled response can trigger a double free in the TLS client when the stapled response is checked. The OCSP stapling is not enabled by default. Reliable code execution through a double-free is technically complex and highly environment-dependent but the Denial of Service impact is straightforward to achieve, warranting Moderate severity. No FIPS modules are affected by this issue as the affected code is outside the OpenSSL FIPS module boundary.

EPSS

Процентиль: 16%
0.00245
Низкий

5 Medium

CVSS3