PT-2017-8957 · Chicken · Httpclient

Published 2017-01-10 · Updated 2017-01-11 · CVE-2016-6287

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions http-client versions prior to 0.10

Description The issue allows an attacker to direct all HTTP requests through a proxy, also known as a "httpoxy" attack, by exploiting the http-client egg's use of the HTTP PROXY environment variable. This can occur when running as a CGI process under several web servers, where a user-supplied "Proxy" header can be used to route HTTP traffic via a proxy.

Recommendations For versions prior to 0.10, update to version 0.10 or later to resolve the issue. As a temporary workaround, consider restricting access to the HTTP PROXY environment variable to minimize the risk of exploitation.

Fix

Weakness Enumeration

CWE-19

Related Identifiers

CVE-2016-6287

Affected Products

Httpclient

References · 4

• https://osv.dev/vulnerability/CVE-2016-6287 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-6287 · Security Note
• http://lists.gnu.org/archive/html/chicken-announce/2016-07/msg00000.html · Note
• http://securityfocus.com/bid/92105 · Note