CVE-2017-6920: Code Injection
First published: Wed Jun 21 2017(Updated: )
Drupal core 8 before versions 8.3.4 allows remote attackers to execute arbitrary code due to the PECL YAML parser not handling PHP objects safely during certain operations.
Credit: mlhess@drupal.org mlhess@drupal.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| composer/drupal/core | >=8.0<8.1.0>=8.1.0<8.2.0>=8.2.0<8.3.0>=8.3.0<8.3.4 | |
| composer/drupal/drupal | >=8.0<8.1.0>=8.1.0<8.2.0>=8.2.0<8.3.0>=8.3.0<8.3.4 | |
| composer/drupal/drupal | >=8.0<8.3.4 | 8.3.4 |
| composer/drupal/core | >=8.0<8.3.4 | 8.3.4 |
| Drupal | >=8.0.0<8.3.4 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://www.drupal.org/SA-CORE-2017-003
- http://www.securityfocus.com/bid/99211
- http://www.securitytracker.com/id/1038781
- https://www.drupal.org/forum/newsletters/security-advisories-for-drupal-core/2017-06-21/drupal-core-multiple
- https://nvd.nist.gov/vuln/detail/CVE-2017-6920
- https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2017-6920.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2017-6920.yaml
- https://github.com/advisories/GHSA-9c24-g32g-35rj (Advisory)
Frequently Asked Questions
What is the severity of CVE-2017-6920?
CVE-2017-6920 is classified as a critical vulnerability due to its ability to allow remote code execution.
How do I fix CVE-2017-6920?
To fix CVE-2017-6920, upgrade Drupal core and Drupal to version 8.3.4 or later.
Which versions of Drupal are affected by CVE-2017-6920?
CVE-2017-6920 affects Drupal core versions prior to 8.3.4 including 8.0.x, 8.1.x, and 8.2.x.
What type of vulnerability is CVE-2017-6920?
CVE-2017-6920 is a remote code execution vulnerability due to unsafe object handling by the PECL YAML parser.
Can CVE-2017-6920 be exploited remotely?
Yes, CVE-2017-6920 can be exploited remotely, allowing attackers to execute arbitrary code on the server.
- collector/friends-of-php
- agent/first-publish-date
- agent/type
- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-9c24-g32g-35rj
- alias/CVE-2017-6920
- agent/software-canonical-lookup
- agent/weakness
- agent/severity
- agent/last-modified-date
- agent/references
- agent/remedy
- agent/description
- agent/author
- agent/softwarecombine
- agent/event
- collector/github-advisory
- agent/trending
- agent/source
- agent/tags
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup-request
- collector/nvd-index
- package-manager/composer
- vendor/drupal
- canonical/drupal
- version/drupal/8.0.0