Skip to content
Noroxi
CVE-2021-40323· NVD / CVE Program· CNA mitre

Cobbler before 3.3.0 allows log poisoning, and resultant Remote Code Execution, via an XMLRPC method that logs to the logfile for template i

Noroxi assessment

Priority: This week (action score 65/100)

  • A ready-made attack module is public (Nuclei); exploiting it takes no special expertise.
  • Public proof-of-concept code exists (Exploit-DB / GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 86.8% (FIRST EPSS); higher than 99.7% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: cobbler (PyPI) 3.3.0; release-notes-susemanager-proxy (SUSE:Manager Proxy 4.2) 4.2.2-3.12.1; release-notes-susemanager (SUSE:Manager Server 4.2) 4.2.2-3.12.1.

Don’t wait for the next maintenance window. Upgrade to cobbler (PyPI) 3.3.0; release-notes-susemanager-proxy (SUSE:Manager Proxy 4.2) 4.2.2-3.12.1; release-notes-susemanager (SUSE:Manager Server 4.2) 4.2.2-3.12.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

CriticalCVSS 9.8 · v3.1—Proof of concept Fix available
Published
Oct 4, 2021
Updated
Jun 17, 2026
EPSS
86.8% · 99th percentile

Report tools

JSON

Action score

65

This week

Don’t wait for the next maintenance window.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
26 / 30 · 86.8%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2021-40323

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for cobbler project records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
cobbler projectcobbler

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • cobbler project cobblerup to 3.3.0 inclusive

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
PyPIcobblerbefore 3.3.03.3.0
SUSE:Manager Proxy 4.2release-notes-susemanager-proxybefore 4.2.2-3.12.14.2.2-3.12.1
SUSE:Manager Server 4.2release-notes-susemanagerbefore 4.2.2-3.12.14.2.2-3.12.1
SUSE:Manager Server Module 4.1cobblerbefore 3.0.0+git20190806.32c4bae0-8.22.6.13.0.0+git20190806.32c4bae0-8.22.6.1
SUSE:Manager Server Module 4.2branch-network-formulabefore 0.1.1628156312.dbd0dec-3.3.10.1.1628156312.dbd0dec-3.3.1
SUSE:Manager Server Module 4.2cobblerbefore 3.1.2-5.8.13.1.2-5.8.1
SUSE:Manager Server Module 4.2cpu-mitigations-formulabefore 0.4.0-3.3.10.4.0-3.3.1
SUSE:Manager Server Module 4.2inter-server-syncbefore 0.0.5-8.3.20.0.5-8.3.2
SUSE:Manager Server Module 4.2openvpn-formulabefore 0.1.2-3.3.10.1.2-3.3.1
SUSE:Manager Server Module 4.2prometheus-exporters-formulabefore 1.0.3-3.6.11.0.3-3.6.1
SUSE:Manager Server Module 4.2py26-compat-saltbefore 2016.11.10-11.28.6.12016.11.10-11.28.6.1
SUSE:Manager Server Module 4.2py27-compat-saltbefore 3000.3-7.7.8.13000.3-7.7.8.1
SUSE:Manager Server Module 4.2saltboot-formulabefore 0.1.1628156312.dbd0dec-3.3.10.1.1628156312.dbd0dec-3.3.1
SUSE:Manager Server Module 4.2spacecmdbefore 4.2.12-4.6.24.2.12-4.6.2
SUSE:Manager Server Module 4.2spacewalk-backendbefore 4.2.16-4.6.34.2.16-4.6.3
SUSE:Manager Server Module 4.2spacewalk-certs-toolsbefore 4.2.12-3.6.24.2.12-3.6.2
SUSE:Manager Server Module 4.2spacewalk-client-toolsbefore 4.2.13-4.6.34.2.13-4.6.3
SUSE:Manager Server Module 4.2spacewalk-javabefore 4.2.28-3.11.54.2.28-3.11.5
SUSE:Manager Server Module 4.2spacewalk-setupbefore 4.2.8-3.6.14.2.8-3.6.1
SUSE:Manager Server Module 4.2spacewalk-utilsbefore 4.2.13-3.6.14.2.13-3.6.1
SUSE:Manager Server Module 4.2spacewalk-webbefore 4.2.21-3.6.34.2.21-3.6.3
SUSE:Manager Server Module 4.2susemanagerbefore 4.2.22-3.6.14.2.22-3.6.1
SUSE:Manager Server Module 4.2susemanager-build-keysbefore 15.3.5-3.3.115.3.5-3.3.1
SUSE:Manager Server Module 4.2susemanager-doc-indexesbefore 4.2-12.8.14.2-12.8.1

+4

Same product

cobbler project: all records

Other highest-scoring records for the same primary product.

  • CVE-2018-10931It was found that cobbler 2.6.x exposed all functions from its CobblerXMLRPCInterface class over XMLRPC.
    59Plan
  • CVE-2021-40324Cobbler before 3.3.0 allows arbitrary file write operations via upload_log_data.
    51Plan
  • CVE-2017-1000469Cobbler version up to 2.8.2 is vulnerable to a command injection vulnerability in the "add repo" component resulting in arbitrary code execu
    41Plan

Published before and after this one in the same product

  • ← EarlierCVE-2011-4953Oct 26, 2014 · The set_mgmt_parameters function in item.py in cobbler before 2.2.2 allows context-dependent attackers to execute arbitrary code via vectors
    28Monitor
  • ← EarlierCVE-2016-9605Aug 22, 2018 · A flaw was found in cobbler software component version 2.6.11-1.
    24Monitor
  • Later →CVE-2021-40325Oct 4, 2021 · Cobbler before 3.3.0 allows authorization bypass for modification of settings.
    30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
PyPI:cobbler3.3.0Package registry (OSV)
suse:branch-network-formula0.1.1628156312.dbd0dec-3.3.1 · SUSE:Manager Server Module 4.2Package registry (OSV)
suse:cobbler3.0.0+git20190806.32c4bae0-8.22.6.1 · SUSE:Manager Server Module 4.1Package registry (OSV)
suse:cpu-mitigations-formula0.4.0-3.3.1 · SUSE:Manager Server Module 4.2Package registry (OSV)
suse:inter-server-sync0.0.5-8.3.2 · SUSE:Manager Server Module 4.2Package registry (OSV)
suse:openvpn-formula0.1.2-3.3.1 · SUSE:Manager Server Module 4.2Package registry (OSV)
suse:prometheus-exporters-formula1.0.3-3.6.1 · SUSE:Manager Server Module 4.2Package registry (OSV)
suse:py26-compat-salt2016.11.10-11.28.6.1 · SUSE:Manager Server Module 4.2Package registry (OSV)
suse:py27-compat-salt3000.3-7.7.8.1 · SUSE:Manager Server Module 4.2Package registry (OSV)
suse:release-notes-susemanager4.2.2-3.12.1 · SUSE:Manager Server 4.2Package registry (OSV)
suse:release-notes-susemanager-proxy4.2.2-3.12.1 · SUSE:Manager Proxy 4.2Package registry (OSV)
suse:saltboot-formula0.1.1628156312.dbd0dec-3.3.1 · SUSE:Manager Server Module 4.2Package registry (OSV)
suse:spacecmd4.2.12-4.6.2 · SUSE:Manager Server Module 4.2Package registry (OSV)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Nuclei detection template ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Nuclei detection templateNuclei template CVE-2021-40323 —

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-94 · Improper Control of Generation of Code ('Code Injection')

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (1 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records