CVE-2021-40348

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-11-01 · updated 2026-06-17
Weakness: CWE-94

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.

Affected products

Spacewalk Project Spacewalk: 2.10
Uyuni-Project Uyuni: 2021.08

References

http://www.openwall.com/lists/oss-security/2021/10/28/4
https://github.com/uyuni-project/uyuni/commit/790c7388efac6923c5475e01c1ff718dffa9f052
http://www.openwall.com/lists/oss-security/2021/10/28/4
https://github.com/uyuni-project/uyuni/commit/790c7388efac6923c5475e01c1ff718dffa9f052

Get alerted when CVE-2021-40348 or the next vulnerability affects your stack