---
title: "CVE-2023-33201\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-2023-33201?format=md
keywords: index, follow
---

# CVE-2023-33201

Publication date 5 July 2023

Last updated 18 March 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**5.3 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2023-33201?format=md#impact-score)

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## Description

Bouncy Castle For Java before 1.74 is affected by an LDAP injection
vulnerability. The vulnerability only affects applications that use an LDAP
CertStore from Bouncy Castle to validate X.509 certificates. During the
certificate validation process, Bouncy Castle inserts the certificate's
Subject Name into an LDAP search filter without any escaping, which leads
to an LDAP injection vulnerability.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| bouncycastle | 26.04 LTS resolute | Not affected |
| 25.10 questing | Not affected |
| 25.04 plucky | Ignored end of life, was needs-triage |
| 24.10 oracular | Ignored end of life, was needs-triage |
| 24.04 LTS noble | Not affected |
| 23.10 mantic | Ignored end of life, was needs-triage |
| 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 1.68-5ubuntu0.1~esm1  Ubuntu Pro |
| 20.04 LTS focal | Fixed 1.61-1ubuntu0.1~esm1  Ubuntu Pro |
| 18.04 LTS bionic | Fixed 1.59-1ubuntu0.1~esm1  Ubuntu Pro |
| 16.04 LTS xenial | Fixed 1.51-4ubuntu1+esm1  Ubuntu Pro |
| 14.04 LTS trusty | Ignored end of standard support |

---

* [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-2023-33201?format=md#patch-details)

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### 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 |
| --- | --- |
| bouncycastle | * Upstream:   [e8c409a](https://github.com/bcgit/bc-java/commit/e8c409a8389c815ea3fda5e8b94c92fdfe583bcc) |

## 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 | Low |
  | Integrity impact | None |
  | 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:L/I:N/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-33201)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2023-33201)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2023-33201)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2023-33201)

### Related Ubuntu Security Notices (USN)

+ [USN-8108-1](https://usn.ubuntu.com/USN-8108-1)
+ Bouncy Castle vulnerabilities
+ 18 March 2026

### Other references

* <https://github.com/bcgit/bc-java/wiki/CVE-2023-33201>
* <https://www.cve.org/CVERecord?id=CVE-2023-33201>