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CVE-2021-32610: In Archive_Tar before 1.4.14, symlinks can refer to targets outside of the extracted archive, a different v...

In Archive_Tar before 1.4.14, symlinks can refer to targets outside of the extracted archive, a different vulnerability than CVE-2020-36193.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

Archive_Tar before 1.4.14 could allow symlinks in an extracted TAR archive to point outside the intended extraction area. The business risk depends on whether a system processes untrusted archives. No CVSS score or KEV listing is provided, so urgency should be driven by exposure to user-supplied archives.

Executive priority

Treat as a targeted remediation item for systems that ingest archives from users, partners, or automated feeds. It is not KEV-listed in the provided data, but affected internet-facing upload or import workflows should be prioritized.

Technical view

CVE-2021-32610 affects PEAR Archive_Tar before 1.4.14. The flaw concerns archive symlink handling where symlink targets can resolve outside the extracted archive. The CVE notes it is distinct from CVE-2020-36193. Public references include the 1.4.14 release, upstream commits, and downstream Drupal, Debian, and Fedora advisories.

Likely exposure

Most likely exposed systems are PHP applications or downstream packages using Archive_Tar before 1.4.14 to extract attacker-supplied or untrusted TAR archives. Exposure is lower where archives are trusted, extraction is isolated, or the vulnerable library is not present.

Exploitation context

The provided sources do not show active exploitation, and the CVE is not listed as KEV. Practical risk requires an application path that accepts or processes untrusted archives using the vulnerable library. The sources do not provide exploit details, impact scope, or a CVSS score.

Researcher notes

Evidence is strongest for the vulnerable component and fixed upstream release. The source bundle does not include CVSS, CWE, exploit status, or detailed product matrices. Downstream advisories indicate packaging impact, but validation should start from actual dependency and package inventory.

Mitigation direction

  • Upgrade PEAR Archive_Tar to version 1.4.14 or later.
  • Apply relevant Drupal, Debian, or Fedora vendor updates where applicable.
  • Check vendor advisories for product-specific fixed package versions.
  • Avoid processing untrusted TAR archives until affected components are updated.
  • Run archive extraction in isolated, least-privileged locations.

Validation and detection

  • Inventory PHP dependencies for pear/archive_tar or packaged Archive_Tar copies.
  • Confirm deployed Archive_Tar versions are 1.4.14 or later.
  • Review applications for TAR extraction of user-supplied archives.
  • Check Drupal, Debian, and Fedora package versions against advisory guidance.
  • Verify extraction paths are isolated and permission-restricted.
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

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

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CVE-2021-32610 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
10Source 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
n/an/an/aListed
Weakness

CWE details

No CWE listed

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