Vulnerability record

CVE-2020-36193

PEAR Archive_Tar Improper Link Resolution Vulnerability

Severity: HighExploitation: Exploitation confirmedCISA KEV
What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Archive_Tar, fix it now.

CISA required action: Apply updates per vendor instructions.

US federal civilian agencies must remediate by Sep 15, 2022.

Patch status

Official fix available since

Apply the vendor's update to every affected system. Check the fixed-in versions below where known.

Basis: NVD patch reference

Description

Tar.php in Archive_Tar through 1.4.11 allows write operations with Directory Traversal due to inadequate checking of symbolic links, a related issue to CVE-2020-28948.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

Products affected by this vulnerability, with versions and the source of each entry
ProductVendorSource
Archive_TarPEARKEV

Sources: KEV = CISA Known Exploited Vulnerabilities catalog. Version details have not been published yet.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdateKEV

    CVE-2020-36193 scored CVSS 7.5: PEAR Archive_Tar, PEAR Archive_Tar Improper Link Resolution Vulnerability

    CISA lists this as exploited in the wild. Unpatched Archive_Tar systems are exposed to active attacks now.

    Basis: NIST National Vulnerability Database

  2. Patch releasedUpdateKEV

    Patch released for CVE-2020-36193: PEAR Archive_Tar, PEAR Archive_Tar Improper Link Resolution Vulnerability

    An official fix is now available for PEAR Archive_Tar. This vulnerability is being exploited, so apply it promptly.

    Basis: NVD patch reference

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References

  • github.com https://github.com/pear/Archive_Tar/commit/cde460582ff389404b5b3ccb59374e9b389de916
  • drupal.org https://www.drupal.org/sa-core-2021-001
  • access.redhat.com https://access.redhat.com/security/cve/cve-2020-36193
  • nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2020-36193
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2021/01/msg00018.html
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2021/04/msg00007.html
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42GPGVVFTLJYA…
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FOZNK4FIIV7FS…
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VJQQYDAOWHD6R…
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YKD5WEFA4WT6A…
  • security.gentoo.org https://security.gentoo.org/glsa/202101-23
  • debian.org https://www.debian.org/security/2021/dsa-4894
  • cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-36193