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Vulnerability details: VCID-2pp9-5w36-aaag
Vulnerability ID VCID-2pp9-5w36-aaag
Aliases CVE-2016-1000109
Summary 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).
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-665 Improper Initialization
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-1000109.html
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generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1000109
generic_textual Low https://httpoxy.org/
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2016-1000109
cvssv3 5.3 https://nvd.nist.gov/vuln/detail/CVE-2016-1000109
cvssv3.1 5.3 https://nvd.nist.gov/vuln/detail/CVE-2016-1000109
generic_textual Medium https://www.kb.cert.org/vuls/id/JLAD-ABYJS2
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-1000109.html
https://api.first.org/data/v1/epss?cve=CVE-2016-1000109
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1000109
https://github.com/facebook/hhvm/commit/423b4b719afd5ef4e6e19d8447fbf7b6bc0d0a25
https://httpoxy.org/
https://www.facebook.com/security/advisories/cve-2016-1000109
https://www.kb.cert.org/vuls/id/JLAD-ABYJS2
cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:*
CVE-2016-1000109 https://nvd.nist.gov/vuln/detail/CVE-2016-1000109
No exploits are available.
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2016-1000109
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2016-1000109
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2016-1000109
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.6935
EPSS Score 0.00685
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.