CVE-2021-45082

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-02-19 · updated 2026-06-17
Weakness: CWE-77

Description

An issue was discovered in Cobbler before 3.3.1. In the templar.py file, the function check_for_invalid_imports can allow Cheetah code to import Python modules via the "#from MODULE import" substring. (Only lines beginning with #import are blocked.)

Affected products

The cobbler Project cobbler: before 3.3.1 — fixed in 3.3.1
Fedoraproject Fedora: 34, 35, 36
openSUSE Backports: sle-15-sp3, sle-15-sp4
openSUSE Factory: all versions
SUSE Linux Enterprise Server: 11-sp3, 12, 15-sp2, 15-sp3

How to fix

Upgrade to a fixed version: The cobbler Project cobbler 3.3.1. Check the vendor advisory for mitigations.

References

https://bugzilla.suse.com/show_bug.cgi?id=1193678
https://github.com/cobbler/cobbler/releases
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEJN7CPW6YCHBFQPFZKGA6AVA6T5NPIW/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z5CSXQE7Q4TVDQJKFYBO4XDH3BZ7BLAR/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZCXMOUW4DH4DYWIJN44SMSU6R3CZDZBE/
https://bugzilla.suse.com/show_bug.cgi?id=1193678
https://github.com/cobbler/cobbler/releases
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEJN7CPW6YCHBFQPFZKGA6AVA6T5NPIW/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z5CSXQE7Q4TVDQJKFYBO4XDH3BZ7BLAR/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZCXMOUW4DH4DYWIJN44SMSU6R3CZDZBE/

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