--- title: "CVE-2023-0465\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2023-0465?format=md keywords: index, follow --- # CVE-2023-0465 Publication date 28 March 2023 Last updated 26 November 2025 --- Ubuntu priority **Low** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) ## Cvss 3 Severity Score **5.3 · Medium** [Score breakdown](https://ubuntu.com/security/CVE-2023-0465?format=md#impact-score) Toggle side navigation ## Description Applications that use a non-default option when verifying certificates may be vulnerable to an attack from a malicious CA to circumvent certain checks. Invalid certificate policies in leaf certificates are silently ignored by OpenSSL and other certificate policy checks are skipped for that certificate. A malicious CA could use this to deliberately assert invalid certificate policies in order to circumvent policy checking on the certificate altogether. Policy processing is disabled by default but can be enabled by passing the `-policy' argument to the command line utilities or by calling the `X509\_VERIFY\_PARAM\_set1\_policies()' function. [Read the notes from the security team](https://ubuntu.com/security/CVE-2023-0465?format=md#notes) ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | edk2 | 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 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 | | nodejs | 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 | | openssl | 26.04 LTS resolute | Fixed 3.0.8-1ubuntu2 | | 25.10 questing | Fixed 3.0.8-1ubuntu2 | | 25.04 plucky | Fixed 3.0.8-1ubuntu2 | | 24.10 oracular | Fixed 3.0.8-1ubuntu2 | | 24.04 LTS noble | Fixed 3.0.8-1ubuntu2 | | 23.10 mantic | Fixed 3.0.8-1ubuntu2 | | 23.04 lunar | Fixed 3.0.8-1ubuntu1.1 | | 22.10 kinetic | Fixed 3.0.5-2ubuntu2.2 | | 22.04 LTS jammy | Fixed 3.0.2-0ubuntu1.9 | | 20.04 LTS focal | Fixed 1.1.1f-1ubuntu2.18 | | 18.04 LTS bionic | Fixed 1.1.1-1ubuntu2.1~18.04.22 | | 16.04 LTS xenial | Fixed 1.0.2g-1ubuntu4.20+esm7 Ubuntu Pro | | 14.04 LTS trusty | Fixed 1.0.1f-1ubuntu2.27+esm7 Ubuntu Pro | | openssl1.0 | 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 1.0.2n-1ubuntu5.12 | | 16.04 LTS xenial | Not in release | | 14.04 LTS trusty | Not in release | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) * [Patch details](https://ubuntu.com/security/CVE-2023-0465?format=md#patch-details) ### 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](https://ubuntu.com/pro) [30-day free trial](https://ubuntu.com/pro/free-trial) ## Notes --- ### [ccdm94](https://launchpad.net/~ccdm94) This CVE was omitted from the changelog of the updates listed below for packages openssl and openssl1.0. ### Patch details For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) | Package | Patch details | | --- | --- | | openssl | * Upstream: * Upstream: | ## Severity score breakdown CVSS version: CVSS v3.0 **Base score** 5.3 · Medium * Base metrics | Parameter | Value | | --- | --- | | Attack vector | Network | | Attack complexity | Low | | Privileges required | None | | User interaction | None | | Scope | Unchanged | | Confidentiality impact | None | | Integrity impact | Low | | Availability impact | None | * Scores | Parameter | Value | | --- | --- | | Base score | 5.3 · Medium | | Exploitability score | - | | Impact score | - | **Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-0465) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2023-0465) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2023-0465) * [Debian](https://security-tracker.debian.org/tracker/CVE-2023-0465) ### Related Ubuntu Security Notices (USN) + [USN-7894-1](https://usn.ubuntu.com/USN-7894-1) + EDK II vulnerabilities + 26 November 2025 ### Other references * *