Description
Cobbler before 3.3.0 allows log poisoning, and resultant Remote Code Execution, via an XMLRPC method that logs to the logfile for template injection.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | cobbler | 2.4.1-0ubuntu2+esm1 | USN-6475-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Manager Server Module 4.2 | cobbler | 3.1.2-5.8.1 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | cpu-mitigations-formula | 0.4.0-3.3.1 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | inter-server-sync | 0.0.5-8.3.2 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | openvpn-formula | 0.1.2-3.3.1 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | prometheus-exporters-formula | 1.0.3-3.6.1 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | py26-compat-salt | 2016.11.10-11.28.6.1 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | py27-compat-salt | 3000.3-7.7.8.1 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | saltboot-formula +1 | 0.1.1628156312.dbd0dec-3.3.1 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | spacecmd | 4.2.12-4.6.2 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | spacewalk-backend | 4.2.16-4.6.3 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | spacewalk-certs-tools | 4.2.12-3.6.2 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | spacewalk-client-tools | 4.2.13-4.6.3 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | spacewalk-java | 4.2.28-3.11.5 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | spacewalk-setup +1 | 4.2.8-3.6.1 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | spacewalk-utils | 4.2.13-3.6.1 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | spacewalk-web | 4.2.21-3.6.3 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | susemanager | 4.2.22-3.6.1 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | susemanager-build-keys | 15.3.5-3.3.1 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | susemanager-docs_en +1 | 4.2-12.8.1 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | susemanager-schema | 4.2.17-3.6.2 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.2 | susemanager-sls | 4.2.16-3.6.1 | SUSE-SU-2021:3170-1 |
| SUSE Manager Server Module 4.1 | cobbler | 3.0.0+git20190806.32c4bae0-8.22.6.1 | SUSE-SU-2021:3151-1 |
| SUSE Manager Server 4.2 | release-notes-susemanager | 4.2.2-3.12.1 | SUSE-RU-2021:3162-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Manager Retail Branch Server 4.2 | release-notes-susemanager-proxy | 4.2.2-3.12.1 | SUSE-RU-2021:3162-1 |
| SUSE Manager Proxy 4.2 | release-notes-susemanager-proxy | 4.2.2-3.12.1 | SUSE-RU-2021:3162-1 |
Automated scanner template
A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.
- Cobbler <3.3.0 - Remote Code Execution http/cves/2021/CVE-2021-40323.yaml
Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | cobbler | < 3.3.0 | 3.3.0 | GHSA-cpqf-3c3r-c9g2 |
Advisories 5
- USN-6475-1 cobbler vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- SUSE-SU-2021:3170-1 Security update for SUSE Manager Server 4.2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-RU-2021:3162-1 Recommended update for SUSE Manager 4.2.2 Release Notes SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3151-1 Security update for cobbler SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2023-2927 cobbler: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 14, 2023