Tenable SecurityCenter Multiple Apache Vulnerabilities (TNS-2015-11)

This script is Copyright (C) 2015-2017 Tenable Network Security, Inc.


Synopsis :

The remote application is affected by multiple vulnerabilities.

Description :

The Tenable SecurityCenter application installed on the remote host
contains a bundled version of Apache HTTP Server prior to 2.4.16. It
is, therefore, affected by the following vulnerabilities :

- A flaw exists in the chunked transfer coding
implementation in http_filters.c. due to a failure to
properly parse chunk headers when handling large
chunk-size values and invalid chunk-extension
characters. A remote attacker can exploit this, via a
crafted request, to carry out HTTP request smuggling,
potentially resulting in cache poisoning or the
hijacking of credentials. (CVE-2015-3183)

- A security bypass vulnerability exists due to a failure
in the ap_some_auth_required() function in request.c to
consider that a Require directive may be associated with
an authorization setting instead of an authentication
setting. A remote attacker can exploit this, by
leveraging the presence of a module that relies on the
2.2 API behavior, to bypass intended access restrictions
under certain circumstances.
(CVE-2015-3185)

Note that the 4.x version of SecurityCenter is impacted only by
CVE-2015-3183. The 5.x version is impacted by both CVE-2015-3183 and
CVE-2015-3185

See also :

http://www.tenable.com/security/tns-2015-11
http://www.apache.org/dist/httpd/Announcement2.2.html
http://www.apache.org/dist/httpd/Announcement2.4.html

Solution :

Apply the relevant patch for version 4.7.1 / 4.8.2 as referenced in
the vendor advisory. Alternatively, upgrade to Tenable SecurityCenter
version 5.0.2.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N)

Family: Web Servers

Nessus Plugin ID: 85628 ()

Bugtraq ID: 75963
75965

CVE ID: CVE-2015-3183
CVE-2015-3185

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