CVE-2020-35459

Name: CVE-2020-35459
Creator: NVD / NIST
Published: 2021-01-12T15:15:13.953+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.68%

Last modified Jun 17, 2026

CVE-2020-35459 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 0.68% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.68%

47.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Clusterlabs	Crmsh	<= 4.2.1
Debian	Debian Linux	9.0

References

http://www.openwall.com/lists/oss-security/2021/01/12/3Mailing List, Patch, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1179999Issue Tracking, Third Party Advisory
https://github.com/ClusterLabs/crmsh/blob/a403aa15f3ea575adfe5e43bf2a31c9f9094fcda/crmsh/history.py#L476Patch, Third Party Advisory
https://github.com/ClusterLabs/crmsh/releasesRelease Notes, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/01/msg00021.htmlMailing List, Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/01/12/3Exploit, Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/01/12/3Mailing List, Patch, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1179999Issue Tracking, Third Party Advisory
https://github.com/ClusterLabs/crmsh/blob/a403aa15f3ea575adfe5e43bf2a31c9f9094fcda/crmsh/history.py#L476Patch, Third Party Advisory
https://github.com/ClusterLabs/crmsh/releasesRelease Notes, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/01/msg00021.htmlMailing List, Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/01/12/3Exploit, Mailing List, Third Party Advisory

Timeline

Published: Jan 12, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-35459?

How severe is CVE-2020-35459?

CVE-2020-35459 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.68% probability of exploitation in the next 30 days.

How do I fix CVE-2020-35459?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-35459?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST