CVE-2017-6927
This function does not correctly handle all methods of injecting malicious HTML, leading to a cross-site scripting vulnerability under certain circumstances.
Does this matter?
Lower severity and a low EPSS score (1.61%). Track it; it rarely justifies an emergency change on its own.
Description
Drupal 8.4.x versions before 8.4.5 and Drupal 7.x versions before 7.57 has a Drupal.checkPlain() JavaScript function which is used to escape potentially dangerous text before outputting it to HTML (as JavaScript output does not typically go through Twig autoescaping). This function does not correctly handle all methods of injecting malicious HTML, leading to a cross-site scripting vulnerability under certain circumstances. The PHP functions which Drupal provides for HTML escaping are not affected.
- CVSS 3.0
- 6.1 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 1.61% probability · 75th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- drupal/drupal · debian/debian linux
- Source
- mlhess@drupal.org
References
- http://www.securityfocus.com/bid/103138Third Party Advisory, VDB Entry
- https://lists.debian.org/debian-lts-announce/2018/02/msg00030.htmlMailing List, Third Party Advisory
- https://www.debian.org/security/2018/dsa-4123Third Party Advisory
- https://www.drupal.org/sa-core-2018-001Vendor Advisory
- http://www.securityfocus.com/bid/103138Third Party Advisory, VDB Entry
- https://lists.debian.org/debian-lts-announce/2018/02/msg00030.htmlMailing List, Third Party Advisory
- https://www.debian.org/security/2018/dsa-4123Third Party Advisory
- https://www.drupal.org/sa-core-2018-001Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.