Vulnerability Note VU#694428

Apache stops writing access/error logs after processing "Request-URI" containing "0x1A" characters

Overview

A vulnerability in the logging of URI requests may permit a remote attacker to disable logging on an Apache HTTP Server. Version 1.3.27 on Windows systems is reported vulnerable to this issue.

I. Description

Apache HTTP Server 1.3.27 running on Win32 systems contains a vulnerability that could enable an attacker to stop the logging process. If the server is configured to use rotatelogs then an attacker can stop logging on the server by sending a crafted URI Request.

II. Impact

Logging on the web server will be disabled. This can be used to mask future attacks against the server.

III. Solution

Upgrade to Apache 1.3.28 to resolve this issue.

Disable the rotatelogs utility on CustomLog or ErrorLog directives.

Systems Affected

Vendor	Status	Date Notified	Date Updated
Apache	Vulnerable	21-Jul-2003

References

http://www.apache.org/dist/httpd/CHANGES_1.3

Credit

Thanks to Hitachi Incident Response Team for reporting this vulnerability.

This document was written by Jason A Rafail.

Other Information

Date Public:	2003-07-21
Date First Published:	2003-07-21
Date Last Updated:	2003-07-21
CERT Advisory:
CVE-ID(s):	CAN-2003-0460
NVD-ID(s):	CAN-2003-0460
US-CERT Technical Alerts:
Metric:	2.47
Document Revision:	7

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