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CVE Record

CVE-2011-3374: It was found that apt-key in apt, all versions, do not correctly validate gpg keys with the master keyring,...

It was found that apt-key in apt, all versions, do not correctly validate gpg keys with the master keyring, leading to a potential man-in-the-middle attack.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2011-3374 concerns apt-key, part of the apt package-management ecosystem. The supplied sources say apt-key did not correctly validate GPG keys with the master keyring, creating a potential man-in-the-middle risk during package trust decisions.

Executive priority

Track this as a supply-chain trust issue with uncertain current exploitability. It is not KEV-listed in the supplied data, but package-manager trust weaknesses can affect system integrity, so validate exposure during Linux baseline reviews.

Technical view

The issue is described as incorrect validation of GPG keys by apt-key against the master keyring. The affected product is apt, listed as all versions in the source bundle. No CVSS, CWE, confirmed exploit status, or specific fixed version is provided here.

Likely exposure

Exposure is most relevant to Linux systems using apt and apt-key for repository trust, especially systems that fetch package metadata or keys over networks an attacker could influence. Exact distribution version exposure is not resolved from the supplied bundle.

Exploitation context

The bundle supports only potential man-in-the-middle risk. It does not show CISA KEV listing, confirmed active exploitation, public weaponization, or exploit prevalence. Treat exploit status as unconfirmed from these sources.

Researcher notes

Evidence is thin in the provided bundle: no CVSS, CWE, fixed version, or exploit confirmation. Focus research on vendor tracker status, apt-key trust behavior, and whether affected workflows still exist on supported distributions.

Mitigation direction

  • Check Debian, Ubuntu, Red Hat, and apt guidance for fixed package status.
  • Keep apt and distribution security updates current.
  • Review apt-key usage and repository trust configuration.
  • Avoid relying on untrusted networks or repositories for package updates.
  • Prioritize replacement of unsupported apt-based systems.

Validation and detection

  • Inventory systems using apt or apt-key.
  • Confirm distribution package status against vendor advisories.
  • Review repository key sources and trust configuration.
  • Check whether systems use unsupported distribution releases.
  • Document compensating controls for package update paths.
Prepared
Confidence
medium
Sources
9

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2011-3374 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
8Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
aptaptAll versionsListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.