SUSE SLES12 Security Update : apache2 (SUSE-SU-2016:2090-1) (httpoxy)

Medium Nessus Plugin ID 93295

Synopsis

The remote SUSE host is missing one or more security updates.

Description

This update for apache2 fixes the following issues :

- It used to be possible to set an arbitrary $HTTP_PROXY environment variable for request handlers -- like CGI scripts -- by including a specially crafted HTTP header in the request (CVE-2016-5387). As a result, these server components would potentially direct all their outgoing HTTP traffic through a malicious proxy server.
This patch fixes the issue: the updated Apache server ignores such HTTP headers and never sets $HTTP_PROXY for sub-processes (unless a value has been explicitly configured by the administrator in the configuration file). (bsc#988488)

- Ignore SIGINT signal in child processes. This fixes a race condition in signals handling when httpd is running on foreground and the user hits ctrl+c. (bsc#970391)

- Don't put the backend in error state (by default) when 500/503 is overridden. (bsc#951692)

- Remove obsolete /usr/share/apache2/rc.apache2 sample script. (bsc#973381)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Server for SAP 12:zypper in -t patch SUSE-SLE-SAP-12-2016-1235=1

SUSE Linux Enterprise Server 12-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-2016-1235=1

To bring your system up-to-date, use 'zypper patch'.

See Also

https://bugzilla.suse.com/show_bug.cgi?id=951692

https://bugzilla.suse.com/show_bug.cgi?id=970391

https://bugzilla.suse.com/show_bug.cgi?id=973381

https://bugzilla.suse.com/show_bug.cgi?id=988488

https://www.suse.com/security/cve/CVE-2016-5387/

http://www.nessus.org/u?719c9228

Plugin Details

Severity: Medium

ID: 93295

File Name: suse_SU-2016-2090-1.nasl

Version: 2.9

Type: local

Agent: unix

Published: 2016/09/02

Updated: 2018/11/29

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5.1

Temporal Score: 3.8

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 8.1

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:apache2, p-cpe:/a:novell:suse_linux:apache2-debuginfo, p-cpe:/a:novell:suse_linux:apache2-debugsource, p-cpe:/a:novell:suse_linux:apache2-example-pages, p-cpe:/a:novell:suse_linux:apache2-prefork, p-cpe:/a:novell:suse_linux:apache2-prefork-debuginfo, p-cpe:/a:novell:suse_linux:apache2-utils, p-cpe:/a:novell:suse_linux:apache2-utils-debuginfo, p-cpe:/a:novell:suse_linux:apache2-worker, p-cpe:/a:novell:suse_linux:apache2-worker-debuginfo, cpe:/o:novell:suse_linux:12

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2016/08/17

Reference Information

CVE: CVE-2016-5387