CVE-2016-1000109: facebook hhvm Improper Initialization

Vulnerability summary

CVE-2016-1000109 is a medium (CVSS 5.3) Improper Initialization vulnerability in facebook hhvm. EPSS estimates a 5.08% chance of exploitation in the next 30 days, higher than 92.2% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 19-02-2020
   PublishedVulnerability first disclosed.
2. 06-08-2024
   Last modifiedVulnerability information updated.

Description

HHVM does not attempt to address RFC 3875 section 4.1.18 namespace conflicts and therefore does not protect CGI applications from the presence of untrusted client data in the HTTP_PROXY environment variable, which might allow remote attackers to redirect a CGI application's outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request, aka an "httpoxy" issue. This issue affects HHVM versions prior to 3.9.6, all versions between 3.10.0 and 3.12.4 (inclusive), and all versions between 3.13.0 and 3.14.2 (inclusive).

• CWE-665Improper InitializationThe product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used.