CVE-2016-3166: HTTP header injection using line breaks
CRLF injection vulnerability in the drupalsetheader function in Drupal 6.x before 6.38, when used with PHP before 5.1.2, allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks by leveraging a module that allows user-submitted data to appear in HTTP headers.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
composer/drupal/drupalto a version that resolves this vulnerability.Fixed in 6.38 - Upgrade
Upgrade
composer/drupal/coreto a version that resolves this vulnerability.Fixed in 6.38 - Upgrade
Upgrade
composer/drupal/coreto a version that resolves this vulnerability.Fixed in 8.0.4 - Upgrade
Upgrade
composer/drupal/drupalto a version that resolves this vulnerability.Fixed in 8.0.4
Event History
Frequently Asked Questions
What is the severity of CVE-2016-3166?
CVE-2016-3166 is rated as a medium severity vulnerability.
How do I fix CVE-2016-3166?
To fix CVE-2016-3166, upgrade to Drupal version 6.38 or later.
Which versions of Drupal are affected by CVE-2016-3166?
Drupal versions 6.x before 6.38 are affected by CVE-2016-3166.
What type of attack does CVE-2016-3166 facilitate?
CVE-2016-3166 facilitates HTTP response splitting attacks through CRLF injection.
Can CVE-2016-3166 be exploited remotely?
Yes, CVE-2016-3166 can be exploited remotely by attackers.