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

Medium Nessus Plugin ID 78270

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: 2014/10/12

Updated: 2018/04/18

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5

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

Vulnerability Information

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

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

Patch Publication Date: 2011/10/31

Reference Information

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

ALAS: 2011-9

RHSA: 2011:1391