---
title: "CVE-2020-35459\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-2020-35459?format=md
keywords: index, follow
---

# CVE-2020-35459

Publication date 12 January 2021

Last updated 18 August 2025

---

Ubuntu priority

**Low**

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

## Cvss 3 Severity Score

**7.8 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2020-35459?format=md#impact-score)

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## Description

An issue was discovered in ClusterLabs crmsh through 4.2.1. Local attackers
able to call "crm history" (when "crm" is run) were able to execute
commands via shell code injection to the crm history commandline,
potentially allowing escalation of privileges.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| crmsh | 26.04 LTS resolute | Fixed 4.2.1-2 |
| 25.10 questing | Fixed 4.2.1-2 |
| 25.04 plucky | Fixed 4.2.1-2 |
| 24.10 oracular | Fixed 4.2.1-2 |
| 24.04 LTS noble | Fixed 4.2.1-2 |
| 23.10 mantic | Fixed 4.2.1-2 |
| 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 4.2.1-2 |
| 21.10 impish | Ignored end of life |
| 21.04 hirsute | Ignored end of life |
| 20.10 groovy | Ignored end of life |
| 20.04 LTS focal | Fixed 4.2.0-2ubuntu1.1 |
| 18.04 LTS bionic | Vulnerable |
| 16.04 LTS xenial | Vulnerable |
| 14.04 LTS trusty | Not affected |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.8 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Local |
  | Attack complexity | Low |
  | Privileges required | Low |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | High |
  | Integrity impact | High |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.8 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-35459)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2020-35459)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2020-35459)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2020-35459)

### Related Ubuntu Security Notices (USN)

+ [USN-6711-1](https://usn.ubuntu.com/USN-6711-1)
+ CRM shell vulnerability
+ 25 March 2024

### Other references

* <https://www.openwall.com/lists/oss-security/2021/01/12/3>
* <https://www.cve.org/CVERecord?id=CVE-2020-35459>