Risk Letters

Exploited vulnerability

CVE-2020-28949

TLP:CLEAR

PEAR Archive_Tar Deserialization of Untrusted Data Vulnerability

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.

Facts

  • Vendor: PEAR
  • Product: Archive_Tar
  • CVSS: 7.8
  • EPSS (probability of exploitation within 30 days): 84.6 %
  • On CISA's Known Exploited Vulnerabilities list since: 25 August 2022
  • First known exploitation: 25 August 2022
  • CISA's deadline for US federal agencies: 15 September 2022
  • Weakness: CWE-74
  • First seen by Risk Letters: 25 August 2022

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD