CVE-2020-28949 (GCVE-0-2020-28949)

Vulnerability from cvelistv5 – Published: 2020-11-19 18:14 – Updated: 2025-10-21 23:35
VLAI? CISA KEV
Summary
Archive_Tar through 1.4.10 has :// filename sanitization only to address phar attacks, and thus any other stream-wrapper attack (such as file:// to overwrite files) can still succeed.
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
  • n/a
Assigner
References
CISA KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 728a5d39-7136-48fc-ac9d-8c6140b2c74b

Vulnerability ID: CVE-2020-28949

Status: Confirmed

Status Updated: 2022-08-25 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2022-08-25
Asserted: 2022-08-25
Scope
Notes: KEV entry: PEAR Archive_Tar Deserialization of Untrusted Data Vulnerability | Affected: PEAR / Archive_Tar | Description: PEAR Archive_Tar allows an unserialization attack because phar: is blocked but PHAR: is not blocked. PEAR stands for PHP Extension and Application Repository and it is an open-source framework and distribution system for reusable PHP components with known usage in third-party products such as Drupal Core and Red Hat Linux. | Required action: Apply updates per vendor instructions. | Due date: 2022-09-15 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://pear.php.net/bugs/bug.php?id=27002, https://www.drupal.org/sa-core-2020-013, https://access.redhat.com/security/cve/cve-2020-28949; https://nvd.nist.gov/vuln/detail/CVE-2020-28949
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-74
Feed CISA Known Exploited Vulnerabilities Catalog
Product Archive_Tar
Due Date 2022-09-15
Date Added 2022-08-25
Vendorproject PEAR
Vulnerabilityname PEAR Archive_Tar Deserialization of Untrusted Data Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 12:27 UTC | Updated: 2026-02-06 07:17 UTC
Show details on NVD website
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      "published": "2020-11-19T19:15:11.937",
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    },
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      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.