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GHSA-v58w-6xc2-w799 puppet

Fix: puppetlabs/puppet@0d6d299

GHSA-v58w-6xc2-w799 is a security vulnerability in puppet. A fix is available for puppet — see the affected versions and patch details below.

Puppet Denial of Service and Arbitrary File Write

Also known asCVE-2012-1987
Published
May 14, 2022
Updated
Dec 7, 2024
Affected
2 pkgs
Patched
2 / 2
Exploits
None indexed
Exploitation data as of Sep 19, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
2.6%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs84th percentile — riskier than 84% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Real-World Exposure

2 pkgs affected
💎puppet💎puppet

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects RubyGems packages — download data is not available via public APIs for these ecosystems.

Description

A vulnerability in Puppet 2.6.x before 2.6.15 and 2.7.x before 2.7.13, and Puppet Enterprise (PE) Users 1.0, 1.1, 1.2.x, 2.0.x, and 2.5.x before 2.5.1 allows remote authenticated users with agent SSL keys to (1) cause a denial of service (memory consumption) via a REST request to a stream that triggers a thread block, as demonstrated using CVE-2012-1986 and /dev/random; or (2) cause a denial of service (filesystem consumption) via crafted REST requests that use "a marshaled form of a Puppet::FileBucket::File object" to write to arbitrary file locations.

Affected Packages

2 total 2 fixed
EcosystemPackageVulnerable rangeFix
💎RubyGemspuppet2.6.0&&< 2.6.152.6.15bundle update puppet --conservative
💎RubyGemspuppet2.7.0&&< 2.7.132.7.13bundle update puppet --conservative

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for puppet, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update puppet to 2.6.15 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-v58w-6xc2-w799 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-v58w-6xc2-w799 can be triaged on real exposure rather than presence alone.

Tailored to GHSA-v58w-6xc2-w799. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatLow
ProductFixed inAdvisory
CloudForms for RHEL 6converge-ui-devel-0:1.0.4-1.el6cfRHSA-2012:1542

Frequently Asked Questions

A vulnerability in Puppet 2.6.x before 2.6.15 and 2.7.x before 2.7.13, and Puppet Enterprise (PE) Users 1.0, 1.1, 1.2.x, 2.0.x, and 2.5.x before 2.5.1 allows remote authenticated users with agent SSL keys to **(1)** cause a denial of service (memory consumption) via a REST request to a stream that triggers a thread block, as demonstrated using CVE-2012-1986 and `/dev/random`; or **(2)** cause a denial of service (filesystem consumption) via crafted REST requests that use "a marshaled form of a `Puppet::FileBucket::File object`" to write to arbitrary file locations.
O3 Security · Impact-Aware SCA

Is GHSA-v58w-6xc2-w799 in your dependencies?

O3 Security finds GHSA-v58w-6xc2-w799 across RubyGems dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

GHSA-v58w-6xc2-w799: puppet DoS | O3 Security