CVE-2020-36193VulnerabilityPublished 08/25/2022Updated 10/24/2026
CVE-2020-36193: PEAR Archive_Tar Improper Link Resolution Vulnerability
Affects PEAR Archive_TarSource CISA KEV
Severity
HighNo CVSS score published yet
- Exploitation
Actively exploited – in CISA KEV since 08/25/2022
- KEV deadline
- 09/15/2022
- EPSS
- 70.6% chance of exploitation in 30 days – higher than 99% of CVEs
What to do
CISA required action
Apply updates per vendor instructions.
Description
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.
Weaknesses
References
- github.com/pear/Archive_Tar/commit/cde460582ff389404b5b3ccb59374e9b389de916, (opens in a new tab)
- drupal.org/sa-core-2021-001, (opens in a new tab)
- access.redhat.com/security/cve/cve-2020-36193 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2020-36193 (opens in a new tab)
- cisa.gov/known-exploited-vulnerabilities-catalog?search=CVE-2020-36193 (opens in a new tab)