CVE-2016-1000109
moderate-risk
Published 2020-02-19
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).
Do I need to act?
~
1.6% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10
Medium
NETWORK
/ LOW complexity
Affected Products (1)
Affected Vendors
References (6)
Exploit
https://httpoxy.org/
Third Party Advisory
https://www.facebook.com/security/advisories/cve-2016-1000109
Exploit
https://httpoxy.org/
Third Party Advisory
https://www.facebook.com/security/advisories/cve-2016-1000109
30
/ 100
moderate-risk
Severity
21/34 · High
Exploitability
4/34 · Minimal
Exposure
5/34 · Minimal