GHSA-h3r9-pjmr-f938 CVE-2016-3163
Drupal Brute force amplification attacks via XML-RPC
- Severity
- 7.5 / 10
- High · CVSS 3.0
- Exploit chance (EPSS)
- 1.43%
- Chance of exploitation in the next 30 days. Higher than 72.94% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- —
- Not classified
- Fix
- Available
- 2 packages have a fixed version
Description
The XML-RPC system in Drupal 6.x before 6.38 and 7.x before 7.43 might make it easier for remote attackers to conduct brute-force attacks via a large number of calls made at once to the same method.
Affected versions
Packagist
| Package | Vulnerable | Fixed in |
|---|---|---|
| drupal/core | >= 7.0, < 7.43 |
7.43 |
| drupal/core | >= 6.0, < 6.38 |
6.38 |
| drupal/drupal | >= 7.0, < 7.43 |
7.43 |
| drupal/drupal | >= 6.0, < 6.38 |
6.38 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
drupal/core Packagist → 7.43
- composer
composer require drupal/core:^7.43
drupal/drupal Packagist → 7.43
- composer
composer require drupal/drupal:^7.43
Severity breakdown
CVSS 3.0 7.5
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
References
Advisories
Packages
Other links
- github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2016-31…
- github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2016-…
- drupal.org/SA-CORE-2016-001
- debian.org/security/2016/dsa-3498
- openwall.com/lists/oss-security/2016/02/24/19
- openwall.com/lists/oss-security/2016/03/15/10
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| DRUPAL-CORE-2026-004 Drupal Core has a SQL Injection issue | Critical Known exploited | Also affects drupal/core |
| CVE-2020-28949 Multiple vulnerabilities through filename manipulation in Archive_Tar | High Known exploited | Also affects drupal/core |
| CVE-2020-13671 Drupal core Unrestricted Upload of File with Dangerous Type | High Known exploited | Also affects drupal/core |
| CVE-2019-6340 Drupal Core Remote Code Execution Vulnerability | High Known exploited | Also affects drupal/core |
| CVE-2018-7602 Drupal Core Remote Code Execution Vulnerability | Critical Known exploited | Also affects drupal/core |
| CVE-2018-7600 Drupal Core Remote Code Execution Vulnerability | Critical Known exploited | Also affects drupal/core |
| DRUPAL-CORE-2026-016 The Navigation module doesn't sufficiently sanitize certain attributes, which can lead to a cross-site scripting (XSS) vulnerability. | Not rated yet | Also affects drupal/core |
| DRUPAL-CORE-2026-015 The Drupal core Link module provides a field type that can be used for internal and external URLs. | Not rated yet | Also affects drupal/core |
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