Improper input validation in Drupal
CVE-2019-6339
In Drupal Core versions 7.x prior to 7.62, 8.6.x prior to 8.6.6 and 8.5.x prior to 8.5.9; A remote code execution vulnerability exists in PHP's built-in phar stream wrapper when performing file operations on an untrusted phar:// URI. Some Drupal code (core, contrib, and custom) may be performing file operations on insufficiently validated user input, thereby being exposed to this vulnerability. This vulnerability is mitigated by the fact that such code paths typically require access to an administrative permission or an atypical configuration.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.332 (98.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Drupal
- Drupal Core — versions 7.x, 8.6.x, 8.5.x
- Debian Debian_linux — versions 8.0, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- mlhess@drupal.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- mlhess@drupal.org (x_refsource_CONFIRM, Patch, Vendor Advisory)
- mlhess@drupal.org (mailing-list, x_refsource_MLIST, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-6339?
- CVE-2019-6339 is a critical-severity vulnerability in Drupal, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2019-01-22.
- How severe is CVE-2019-6339?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2019-6339 known to be exploited?
- 15 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.