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CVE-2020-36193

PEAR Archive_Tar Improper Link Resolution

7.5 HIGHActively exploited (CISA KEV)EPSS 70.6%
  1. Published18 Jan 2021
  2. Added to CISA KEV25 Aug 2022
  3. Remediation due15 Sept 2022
Actively exploited (CISA KEV)

PEAR Archive_Tar Tar.php allows write operations with directory traversal due to inadequate checking of symbolic links. 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.

Added to KEV: 25 Aug 2022Federal remediation due: 15 Sept 2022

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

Drupal≥ 7.0 < 7.78 · ≥ 8.9.0 < 8.9.13 · ≥ 9.0.0 < 9.0.11 · ≥ 9.1.0 < 9.1.3
PHP Archive Tar≤ 1.4.11
Debian Linux10.0 · 9.0
Fedoraproject Fedora32 · 33 · 34 · 35

Remediation

Fixed in
Drupal≥ 7.78

References

and 1 more references

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Frequently asked

Is CVE-2020-36193 being actively exploited?

Yes. CVE-2020-36193 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 25 Aug 2022.

How severe is CVE-2020-36193?

CVE-2020-36193 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 70.6% probability of exploitation.

Which products are affected by CVE-2020-36193?

Affected products include Drupal, PHP Archive Tar, Debian Linux, Fedoraproject Fedora.

How do I fix CVE-2020-36193?

Upgrade affected software to a fixed version, for example Drupal 7.78 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2020-36193 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.