Amazon Linux AMI : httpd (ALAS-2011-9)

medium Nessus Plugin ID 78270
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VPR Score: 4.2

Synopsis

The remote Amazon Linux AMI host is missing a security update.

Description

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)

Solution

Run 'yum update httpd' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2011-9.html

Plugin Details

Severity: Medium

ID: 78270

File Name: ala_ALAS-2011-9.nasl

Version: 1.4

Type: local

Agent: unix

Published: 10/12/2014

Updated: 4/18/2018

Dependencies: 12634

Risk Information

Risk Factor: Medium

VPR Score: 4.2

CVSS v2.0

Base Score: 5

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

Vulnerability Information

CPE: cpe:2.3:o:amazon:linux:*:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:httpd:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:httpd-debuginfo:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:httpd-devel:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:httpd-manual:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:httpd-tools:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:mod_ssl:*:*:*:*:*:*:*

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

Patch Publication Date: 10/31/2011

Reference Information

CVE: CVE-2011-3348, CVE-2011-3368

RHSA: 2011:1391

ALAS: 2011-9