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Scientific Linux Security Update : httpd on SL7.x x86_64 (20160718) (httpoxy)
high Nessus Plugin ID 92404
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Synopsis
The remote Scientific Linux host is missing one or more security updates.Description
Security Fix(es) :- 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.
(CVE-2016-5387)
Note: After this update, httpd will no longer pass the value of the Proxy request header to scripts via the HTTP_PROXY environment variable.
Bug Fix(es) :
- In a caching proxy configuration, the mod_cache module would treat content as stale if the Expires header changed when refreshing a cached response. As a consequence, an origin server returning content without a fixed Expires header would not be treated as cacheable. The mod_cache module has been fixed to ignore changes in the Expires header when refreshing content.
As a result, such content is now cacheable, improving performance and reducing load at the origin server.
- The HTTP status code 451 'Unavailable For Legal Reasons' was not usable in the httpd configuration. As a consequence, modules such as mod_rewrite could not be configured to return a 451 error if required for legal purposes. The 451 status code has been added to the list of available error codes, and modules can now be configured to return a 451 error if required.
Solution
Update the affected packages.See Also
Plugin Details
Severity: High
ID: 92404
File Name: sl_20160718_httpd_on_SL7_x.nasl
Version: 2.9
Type: local
Agent: unix
Published: 7/19/2016
Updated: 1/14/2021
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: Medium
Base Score: 5.1
Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:P
CVSS v3
Risk Factor: High
Base Score: 8.1
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability Information
CPE: p-cpe:/a:fermilab:scientific_linux:httpd, p-cpe:/a:fermilab:scientific_linux:httpd-debuginfo, p-cpe:/a:fermilab:scientific_linux:httpd-devel, p-cpe:/a:fermilab:scientific_linux:httpd-manual, p-cpe:/a:fermilab:scientific_linux:httpd-tools, p-cpe:/a:fermilab:scientific_linux:mod_ldap, p-cpe:/a:fermilab:scientific_linux:mod_proxy_html, p-cpe:/a:fermilab:scientific_linux:mod_session, p-cpe:/a:fermilab:scientific_linux:mod_ssl, x-cpe:/o:fermilab:scientific_linux
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RedHat/release, Host/RedHat/rpm-list
Patch Publication Date: 7/18/2016
Vulnerability Publication Date: 7/19/2016
Reference Information
CVE: CVE-2016-5387