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CVE Record

CVE-2011-3630: Hardlink before 0.1.2 suffer from multiple stack-based buffer overflow flaws because of the way directory t...

Hardlink before 0.1.2 suffer from multiple stack-based buffer overflow flaws because of the way directory trees with deeply nested directories are processed. A remote attacker could provide a specially-crafted directory tree, and trick the local user into consolidating it, leading to hardlink executable crash, or, potentially arbitrary code execution with the privileges of the user running the hardlink executable.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2011-3630 affects the hardlink file-consolidation utility before version 0.1.2. A maliciously crafted, deeply nested directory tree could crash the tool or potentially run code as the user who runs it. The attacker still needs the victim or an automated workflow to process that directory tree with hardlink.

Executive priority

Treat this as a targeted hygiene issue, not a broad internet emergency. Prioritize legacy systems and automation that process untrusted directory trees with hardlink.

Technical view

The sources describe multiple stack-based buffer overflows in hardlink before 0.1.2 when processing deeply nested directory trees. The reported impact is executable crash or potential arbitrary code execution under the invoking user's privileges. No CVSS, CWE, or confirmed exploitation details are provided in the bundle.

Likely exposure

Exposure is likely limited to systems with hardlink before 0.1.2, especially workflows that consolidate downloaded, extracted, shared, or user-supplied directory trees.

Exploitation context

The source bundle does not show CISA KEV listing or confirmed active exploitation. Reported exploitation requires a crafted directory tree and a local user or process running hardlink against it.

Researcher notes

The evidence supports memory corruption in hardlink's recursive directory handling before 0.1.2. Impact is described as crash or possible code execution, but the bundle lacks exploit confirmation, CVSS scoring, and detailed patch metadata.

Mitigation direction

  • Update hardlink to version 0.1.2 or later where available.
  • Use distribution security advisories for backported fixed package versions.
  • Avoid running hardlink on untrusted or externally supplied directory trees.
  • Remove hardlink from systems where it is not required.
  • Run hardlink with least-privileged accounts for operational workflows.

Validation and detection

  • Inventory installed hardlink versions across Linux and Unix systems.
  • Confirm distro package changelogs or advisories include the CVE fix.
  • Identify automated jobs that process external or user-supplied directory trees.
  • Review file-consolidation workflows for least-privilege execution.
  • Check incident logs for hardlink crashes during directory processing.
Prepared
Confidence
medium
Sources
6

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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ATT&CK lookup starting points

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description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2011-3630 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
6Source 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
hardlinkhardlinkbefore 0.1.2Listed
Weakness

CWE details

No CWE listed

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