CVE-2016-1000109
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…
Does this matter?
Lower severity and a low EPSS score (5.08%). Track it; it rarely justifies an emergency change on its own.
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).
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 5.08% probability · 92th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-665
- Affected
- facebook/hhvm
- Source
- cve@mitre.org
References
- https://github.com/facebook/hhvm/commit/423b4b719afd5ef4e6e19d8447fbf7b6bc0d0a25Patch, Third Party Advisory
- https://httpoxy.org/Exploit, Mitigation, Third Party Advisory
- https://www.facebook.com/security/advisories/cve-2016-1000109Third Party Advisory
- https://github.com/facebook/hhvm/commit/423b4b719afd5ef4e6e19d8447fbf7b6bc0d0a25Patch, Third Party Advisory
- https://httpoxy.org/Exploit, Mitigation, Third Party Advisory
- https://www.facebook.com/security/advisories/cve-2016-1000109Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.