CVE-2023-0466

Publication date 28 March 2023

Last updated 26 November 2025

Ubuntu priority

Negligible

Why this priority?

Cvss 3 Severity Score

5.3 · Medium

Score breakdown

Description

The function X509_VERIFY_PARAM_add0_policy() is documented to implicitly enable the certificate policy check when doing certificate verification. However the implementation of the function does not enable the check which allows certificates with invalid or incorrect policies to pass the certificate verification. As suddenly enabling the policy check could break existing deployments it was decided to keep the existing behavior of the X509_VERIFY_PARAM_add0_policy() function. Instead the applications that require OpenSSL to perform certificate policy check need to use X509_VERIFY_PARAM_set1_policies() or explicitly enable the policy check by calling X509_VERIFY_PARAM_set_flags() with the X509_V_FLAG_POLICY_CHECK flag argument. Certificate policy checks are disabled by default in OpenSSL and are not commonly used by applications.

Read the notes from the security team

Status

Package Ubuntu Release Status
openssl 26.10 stonking
Fixed in 3.0.8-1ubuntu2
26.04 LTS resolute
Fixed in 3.0.8-1ubuntu2
25.10 questing
Fixed in 3.0.8-1ubuntu2
25.04 plucky
Fixed in 3.0.8-1ubuntu2
24.10 oracular
Fixed in 3.0.8-1ubuntu2
24.04 LTS noble
Fixed in 3.0.8-1ubuntu2
23.10 mantic
Fixed in 3.0.8-1ubuntu2
23.04 lunar
Fixed in 3.0.8-1ubuntu1.1
22.10 kinetic
Fixed in 3.0.5-2ubuntu2.2
22.04 LTS jammy
Fixed in 3.0.2-0ubuntu1.9
20.04 LTS focal
Fixed in 1.1.1f-1ubuntu2.18
18.04 LTS bionic
Fixed in 1.1.1-1ubuntu2.1~18.04.22
16.04 LTS xenial
Fixed in 1.0.2g-1ubuntu4.20+esm7
14.04 LTS trusty
Fixed in 1.0.1f-1ubuntu2.27+esm7
openssl1.0 26.10 stonking Not in release
26.04 LTS resolute Not in release
25.10 questing Not in release
25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.10 kinetic Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic
Fixed in 1.0.2n-1ubuntu5.12
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
nodejs 26.10 stonking
Not affected
26.04 LTS resolute
Not affected
25.10 questing
Not affected
25.04 plucky
Not affected
24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar
Not affected
22.10 kinetic
Not affected
22.04 LTS jammy
Vulnerable
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected
edk2 26.10 stonking
Not affected
26.04 LTS resolute
Not affected
25.10 questing
Not affected
25.04 plucky
Not affected
24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic Ignored end of life, was needed
23.04 lunar Ignored end of life, was needs-triage
22.10 kinetic Ignored end of life, was needs-triage
22.04 LTS jammy
Fixed in 2022.02-3ubuntu0.22.04.4
20.04 LTS focal
Vulnerable
18.04 LTS bionic
Needs evaluation
16.04 LTS xenial
Needs evaluation
14.04 LTS trusty Ignored end of standard support

Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

Get Ubuntu Pro 30-day free trial

Notes

mdeslaur

The upstream fix for this is only a documentation change

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
openssl

Severity score breakdown

CVSS version: CVSS v3.0

Base score 5.3 · Medium

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-6039-1
    • OpenSSL vulnerabilities
    • 25 April 2023
    • USN-7894-1
    • EDK II vulnerabilities
    • 26 November 2025

Other references

Access our resources on patching vulnerabilities