RHEL 5 / 6 : httpd (RHSA-2012:0542)

high Nessus Plugin ID 78923

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Synopsis

The remote Red Hat host is missing one or more security updates for httpd.

Description

The remote Redhat Enterprise Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2012:0542 advisory.

The Apache HTTP Server (httpd) is the namesake project of The Apache Software Foundation.

It was discovered that the Apache HTTP Server did not properly validate the request URI for proxied requests. In certain configurations, if a reverse proxy used the ProxyPassMatch directive, or if it used the RewriteRule directive with the proxy flag, a remote attacker could make the proxy connect to an arbitrary server, possibly disclosing sensitive information from internal web servers not directly accessible to the attacker.
(CVE-2011-3368)

It was discovered that mod_proxy_ajp incorrectly returned an Internal Server Error response when processing certain malformed HTTP requests, which caused the back-end server to be marked as failed in configurations where mod_proxy was used in load balancer mode. A remote attacker could cause mod_proxy to not send requests to back-end AJP (Apache JServ Protocol) servers for the retry timeout period or until all back-end servers were marked as failed. (CVE-2011-3348)

The httpd server included the full HTTP header line in the default error page generated when receiving an excessively long or malformed header.
Malicious JavaScript running in the server's domain context could use this flaw to gain access to httpOnly cookies. (CVE-2012-0053)

An integer overflow flaw, leading to a heap-based buffer overflow, was found in the way httpd performed substitutions in regular expressions. An attacker able to set certain httpd settings, such as a user permitted to override the httpd configuration for a specific directory using a .htaccess file, could use this flaw to crash the httpd child process or, possibly, execute arbitrary code with the privileges of the apache user.
(CVE-2011-3607)

A NULL pointer dereference flaw was found in the httpd mod_log_config module. In configurations where cookie logging is enabled, a remote attacker could use this flaw to crash the httpd child process via an HTTP request with a malformed Cookie header. (CVE-2012-0021)

A flaw was found in the way httpd handled child process status information.
A malicious program running with httpd child process privileges (such as a PHP or CGI script) could use this flaw to cause the parent httpd process to crash during httpd service shutdown. (CVE-2012-0031)

Red Hat would like to thank Context Information Security for reporting the CVE-2011-3368 issue.

This update also fixes the following bug:

* The fix for CVE-2011-3192 provided by the RHSA-2011:1329 update introduced a regression in the way httpd handled certain Range HTTP header values. This update corrects this regression. (BZ#749071)

All users of JBoss Enterprise Web Server 1.0.2 should upgrade to these updated packages, which contain backported patches to correct these issues.
After installing the updated packages, users must restart the httpd service for the update to take effect.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL httpd package based on the guidance in RHSA-2012:0542.

Plugin Details

Severity: High

ID: 78923

File Name: redhat-RHSA-2012-0542.nasl

Version: 1.13

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 11/8/2014

Updated: 3/21/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2011-3368

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

CVSS Score Source: CVE-2012-0021

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:5, p-cpe:/a:redhat:enterprise_linux:httpd-devel, p-cpe:/a:redhat:enterprise_linux:mod_ssl, p-cpe:/a:redhat:enterprise_linux:httpd-tools, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:redhat:enterprise_linux:httpd-manual, p-cpe:/a:redhat:enterprise_linux:httpd

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/7/2012

Vulnerability Publication Date: 9/20/2011

Reference Information

CVE: CVE-2011-3348, CVE-2011-3368, CVE-2011-3607, CVE-2012-0021, CVE-2012-0031, CVE-2012-0053

BID: 49616, 49957, 50494, 51407, 51705, 51706

CWE: 190, 476

RHSA: 2012:0542

Detections

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