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CVE-2011-3870· NVD / CVE Program· CNA mitre

Puppet 2.7.x before 2.7.5, 2.6.x before 2.6.11, and 0.25.x allows local users to modify the permissions of arbitrary files via a symlink att

Puppet 2.7.x before 2.7.5, 2.6.x before 2.6.11, and 0.25.x allows local users to modify the permissions of arbitrary files via a symlink attack on the SSH authorized_keys file.

MediumCVSS 6.3 · v2.0—No exploit Fix available
Published
Oct 27, 2011
Updated
Jun 16, 2026
EPSS
0.4% · 26th percentile
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Report tools

JSON

Action score

25

Monitor

Low priority for now.

CVSS
25 / 40 · 6.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

Affected systems

VendorProduct
puppetpuppet
puppetlabspuppet

Affected versions

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

  • puppet puppet0.25.0
  • puppet puppet0.25.1
  • puppet puppet0.25.2
  • puppet puppet0.25.3
  • puppet puppet0.25.4
  • puppet puppet0.25.5
  • puppet puppet0.25.6
  • puppet puppet2.6.0
  • puppet puppet2.6.1
  • puppet puppet2.6.10
  • puppet puppet2.6.2
  • puppet puppet2.6.3
  • puppet puppet2.6.4
  • puppet puppet2.6.5
  • puppet puppet2.6.6
  • puppet puppet2.6.7
  • puppet puppet2.6.8
  • puppet puppet2.6.9
  • puppet puppet2.7.2
  • puppet puppet2.7.3

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:11puppetbefore 2.7.3-32.7.3-3
Debian:6.0puppetbefore 2.6.2-5+squeeze12.6.2-5+squeeze1
RubyGemspuppetfrom 2.7.0 · before 2.7.52.7.5
RubyGemspuppetbefore 2.6.112.6.11

Same product

puppet: all records

Other highest-scoring records for the same primary product.

  • CVE-2016-2785Puppet Server before 2.3.2 and Ruby puppetmaster in Puppet 4.x before 4.4.2 and in Puppet Agent before 1.4.2 might allow remote attackers to
    40Plan
  • CVE-2013-1640The (1) template and (2) inline_template functions in the master server in Puppet before 2.6.18, 2.7.x before 2.7.21, and 3.1.x before 3.1.1
    37Monitor
  • CVE-2021-27021A flaw was discovered in Puppet DB, this flaw results in an escalation of privileges which allows the user to delete tables via an SQL query
    35Monitor
  • CVE-2018-6513Puppet Enterprise 2016.4.x prior to 2016.4.12, Puppet Enterprise 2017.3.x prior to 2017.3.7, Puppet Enterprise 2018.1.x prior to 2018.1.1, P
    35Monitor
  • CVE-2017-2295Versions of Puppet prior to 4.10.1 will deserialize data off the wire (from the agent to the server, in this case) with a attacker-specified
    33Monitor
  • CVE-2018-6515Puppet Agent 1.10.x prior to 1.10.13, Puppet Agent 5.3.x prior to 5.3.7, and Puppet Agent 5.5.x prior to 5.5.2 on Windows only, with a speci
    31Monitor

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
debian:puppet2.7.3-3 · Debian:11Package registry (OSV)
RubyGems:puppet2.6.11Package registry (OSV)
RubyGems:puppet2.7.5Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

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.

No commit or PR link among the references.

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

    If successful

    Confidentiality
    none
    Integrity
    C · data or configuration can be modified
    Availability
    C · the service can be disrupted
    Attack complexity
    M
    Confidentiality impact
    None
    Integrity impact
    C
    Availability impact
    C

    Weakness class (CWE)

    CWE-59 · Improper Link Resolution Before File Access ('Link Following')

    CVSS vector

    AV:L/AC:M/Au:N/C:N/I:C/A:C

    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.

    Noroxi analysis

    No Noroxi analysis for this record yet

    We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

    We use this product, ask for help

    Change log

    1. Fix✗ → ✓

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

    References

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

    All records