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AUSCERT Security Bulletin
ASB-2010.0181.2
Apache HTTP Server (httpd) 2.2.16 Released
29 July 2010
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AusCERT Security Bulletin Summary
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Product: Apache HTTPD
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Read-only Data Access -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2010-2068 CVE-2010-1452
Member content until: Wednesday, August 25 2010
Reference: ESB-2010.0531
Revision History: July 29 2010: Additional vulnerability and CVE added
July 26 2010: Initial Release
OVERVIEW
Apache HTTP Server (httpd) 2.2.16 has been released fixing a number of
vulnerabilities.
IMPACT
The Apache Software Foundation states that the 2.2.16 release
resolves the following security issues:
"important: Timeout detection flaw (mod_proxy_http) CVE-2010-2068
An information disclosure flaw was found in mod_proxy_http in
versions 2.2.9 through 2.2.15, 2.3.4-alpha and 2.3.5-alpha. Under
certain timeout conditions, the server could return a response
intended for another user. Only Windows, Netware and OS2 operating
systems are affected. Only those configurations which trigger the
use of proxy worker pools are affected. There was no vulnerability
on earlier versions, as proxy pools were not yet introduced. The
simplest workaround is to globally configure;
SetEnv proxy-nokeepalive 1" [1]
"low: mod_cache and mod_dav DoS CVE-2010-1452
A flaw was found in the handling of requests by mod_cache and
mod_dav. A malicious remote attacker could send a carefully crafted
request and cause a httpd child process to crash. This crash would
only be a denial of service if using the worker MPM. This issue is
further mitigated as mod_dav is only affected by requests that are
most likely to be authenticated, and mod_cache is only affected if
the uncommon "CacheIgnoreURLSessionIdentifiers" directive, introduced
in version 2.2.14, is used." [1]
MITIGATION
The Apache Software Foundation has made Apache http 2.2.16 available
for download via it's websites and mirrors. [2]
It is expected that vendors which package the Apache http
server will release updated packages shortly.
REFERENCES
[1] Apache httpd 2.2 vulnerabilities
http://httpd.apache.org/security/vulnerabilities_22.html
[2] Downloading the Apache HTTP Server
http://httpd.apache.org/download.cgi
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
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