Open Redirect in Drupal

CVE-2016-5385

PHP through 7.0.8 does not attempt to address RFC 3875 section 4.1.18 namespace conflicts and therefore does not protect applications from the presence of untrusted client data in the HTTP_PROXY environment variable, which might allow remote attackers to redirect an application's outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request, as demonstrated by (1) an application that makes a getenv('HTTP_PROXY') call or (2) a CGI configuration of PHP, aka an "httpoxy" issue.

Vulnerability class: Open Redirect

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.504 (98.9th percentile), scored .

High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 98.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2016-5385: held from 0.504 to 0.504.

EPSS over last 30 days · oldest: 0.504 · newest: 0.504 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2016-5385?
CVE-2016-5385 is a high-severity vulnerability in Drupal, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 8.1/10. Published 2016-07-19.
How severe is CVE-2016-5385?
High severity. CVSS v3 base score is 8.1 out of 10.
Is CVE-2016-5385 known to be exploited?
57 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.