---
id: CVE-2024-6119
title: Possible denial of service in X.509 name checks
summary: |-
  Issue summary: Applications performing certificate name checks (e.g., TLS
  clients checking server certificates) may attempt to read an invalid memory
  address resulting in abnormal termination of the application process.

  Impact summary: …
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cvssSource: adp
cwe:
  - CWE-843
vendor: OpenSSL
product: OpenSSL
affected:
  - OpenSSL >= 3.3.0 < 3.3.2
  - OpenSSL >= 3.2.0 < 3.2.3
  - OpenSSL >= 3.1.0 < 3.1.7
  - OpenSSL >= 3.0.0 < 3.0.15
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2024-09-03T20:20:39.935362Z'
published: '2024-09-03'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T00:33:30.773Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2024-6119'
references:
  - url: 'https://openssl-library.org/news/secadv/20240903.txt'
    label: OpenSSL Advisory
  - url: >-
      https://github.com/openssl/openssl/commit/7dfcee2cd2a63b2c64b9b4b0850be64cb695b0a0
    label: 3.3.2 git commit
  - url: >-
      https://github.com/openssl/openssl/commit/05f360d9e849a1b277db628f1f13083a7f8dd04f
    label: 3.2.3 git commit
  - url: >-
      https://github.com/openssl/openssl/commit/621f3729831b05ee828a3203eddb621d014ff2b2
    label: 3.1.7 git commit
  - url: >-
      https://github.com/openssl/openssl/commit/06d1dc3fa96a2ba5a3e22735a033012aadc9f0d6
    label: 3.0.15 git commit
tags:
  - cve.org
epss: 0.66582
epssPercentile: 0.99284
ingestedAt: '2026-10-15T04:46:37.301Z'
---

## Overview

Issue summary: Applications performing certificate name checks (e.g., TLS
clients checking server certificates) may attempt to read an invalid memory
address resulting in abnormal termination of the application process.

Impact summary: Abnormal termination of an application can a cause a denial of
service.

Applications performing certificate name checks (e.g., TLS clients checking
server certificates) may attempt to read an invalid memory address when
comparing the expected name with an `otherName` subject alternative name of an
X.509 certificate. This may result in an exception that terminates the
application program.

Note that basic certificate chain validation (signatures, dates, ...) is not
affected, the denial of service can occur only when the application also
specifies an expected DNS name, Email address or IP address.

TLS servers rarely solicit client certificates, and even when they do, they
generally don't perform a name check against a reference identifier (expected
identity), but rather extract the presented identity after checking the
certificate chain.  So TLS servers are generally not affected and the severity
of the issue is Moderate.

The FIPS modules in 3.3, 3.2, 3.1 and 3.0 are not affected by this issue.

## Affected

- `OpenSSL >= 3.3.0 < 3.3.2`
- `OpenSSL >= 3.2.0 < 3.2.3`
- `OpenSSL >= 3.1.0 < 3.1.7`
- `OpenSSL >= 3.0.0 < 3.0.15`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.