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CVE-2016-5387

Public on 2016-07-19
Modified on 2016-07-20
Description

It was discovered that httpd used the value of the Proxy header from HTTP requests to initialize the HTTP_PROXY environment variable for CGI scripts, which in turn was incorrectly used by certain HTTP client implementations to configure the proxy for outgoing HTTP requests. A remote attacker could possibly use this flaw to redirect HTTP requests performed by a CGI script to an attacker-controlled proxy via a malicious HTTP request.

Severity
Important
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CVSS v3 Base Score
5.0
See breakdown
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 httpd 2016-07-20 18:00 ALAS-2016-725
Amazon Linux 1 httpd24 2016-07-20 18:00 ALAS-2016-725

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv2 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N
Amazon Linux CVSSv3 5.0 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
NVD CVSSv2 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P
NVD CVSSv3 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H