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CVE-2016-6287: The "http-client" egg always used a HTTP_PROXY environment variable to determine whether HTTP traffic shoul...

The "http-client" egg always used a HTTP_PROXY environment variable to determine whether HTTP traffic should be routed via a proxy, even when running as a CGI process. Under several web servers this would mean a user-supplied "Proxy" header could allow an attacker to direct all HTTP requests through a proxy (also known as a "httpoxy" attack). This affects all versions of http-client before 0.10.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

CHICKEN Scheme's http-client egg before 0.10 could trust an HTTP_PROXY setting created from a user's Proxy request header in CGI deployments. That could let an attacker make server-side outbound HTTP requests use an attacker-chosen proxy, exposing or altering traffic depending on the application. Exposure is most likely where CHICKEN Scheme applications use the http-client egg before 0.10 and run under CGI or compatible handlers that populate HTTP_PROXY from request headers. Treat as a targeted moderate priority. It is not reported as actively exploited in the provided sources, but exposed CGI applications could leak or route server-side HTTP traffic through attacker-controlled infrastructure. Mitigation focus: Upgrade CHICKEN http-client to version 0.10 or later.; Review the CHICKEN announcement for related spiffy-cgi-handlers updates.; Check web server and CGI guidance for Proxy-header handling..

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Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

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Known Exploited
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CNA and ADP enrichment extracted from CVE v5

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