CVE-2021-40348

Name: CVE-2021-40348
Creator: NVD / NIST
Published: 2021-11-01T05:15:07.007+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.74%

Last modified Jun 17, 2026

CVE-2021-40348 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Spacewalk 2.10, and derivatives such as Uyuni 2021.08, allows code injection. rhn-config-satellite.pl doesn't sanitize the configuration filename used to append Spacewalk-specific key-value pair. EPSS estimates a 1.74% chance of exploitation in the next 30 days.

Description

Spacewalk 2.10, and derivatives such as Uyuni 2021.08, allows code injection. rhn-config-satellite.pl doesn't sanitize the configuration filename used to append Spacewalk-specific key-value pair. The script is intended to be run by the tomcat user account with Sudo, according to the installation setup. This can lead to the ability of an attacker to use --option to append arbitrary code to a root-owned file that eventually will be executed by the system. This is fixed in Uyuni spacewalk-admin 4.3.2-1.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.74%

74.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

Affected Software

Vendor	Product	Versions
Uyuni-Project	Uyuni	2021.08
Spacewalk Project	Spacewalk	2.10

References

http://www.openwall.com/lists/oss-security/2021/10/28/4Exploit, Mailing List, Patch, Third Party Advisory
https://github.com/uyuni-project/uyuni/commit/790c7388efac6923c5475e01c1ff718dffa9f052Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/28/4Exploit, Mailing List, Patch, Third Party Advisory
https://github.com/uyuni-project/uyuni/commit/790c7388efac6923c5475e01c1ff718dffa9f052Patch, Third Party Advisory

Timeline

Published: Nov 1, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-40348?

How severe is CVE-2021-40348?

CVE-2021-40348 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.74% probability of exploitation in the next 30 days.

How do I fix CVE-2021-40348?

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-2021-40348?

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

Scan your code now

Source: NVD / NIST