Apache warns Web server admins of DoS attack tool
'Apache Killer' circulates in the wild, say project devs, who promise a patch in 48 hours
Computerworld - Developers of the Apache open-source project today warned users of the popular Web server software that a denial-of-service (DoS) tool is circulating that exploits a bug in the program.
The tool, called "Apache Killer," showed up last Friday in a post to the "Full Disclosure" security mailing list.
Today, the Apache project acknowledged the vulnerability that the attack tool exploits, and said it would release a fix for Apache 2.0 and 2.2 in the next 48 hours.
"A denial of service vulnerability has been found in the way the multiple overlapping ranges are handled by Apache," the group said in a security advisory. According to Apache, all versions in the 1.3 and 2.0 lines are vulnerable to attack.
The group no longer supports the older Apache 1.3.
"An attack tool is circulating in the wild. Active use of this tools has been observed," the advisory stated. "The attack can be done remotely and with a modest number of requests can cause very significant memory and CPU usage on the server."
The bug was not new. Michal Zalewski, a security engineer who works for Google, pointed out that he had brought up the DOS exploitability of Apache more than four-and-a-half years ago.
In lieu of a fix, Apache offered steps administrators can take to defend their Web servers until a patch is available.
According to U.K.-based Netcraft, Apache is the most widely-used Web server software in the world, accounting for 65.2% of all such software currently in use.
Because Apple bundles Apache with Mac OS X -- and maintains the software via its operating system updates -- users running a Mac-based server will have to wait for Apple to deliver a fix.
"It will be interesting to see how Apple rates the bug and how quickly they patch," said Andrew Storms, director of security operations at nCircle, in an interview today via instant messaging.
Gregg Keizer covers Microsoft, security issues, Apple, Web browsers and general technology breaking news for Computerworld. Follow Gregg on Twitter at @gkeizer, on Google+ or subscribe to Gregg's RSS feed . His e-mail address is email@example.com.
Read more about Security in Computerworld's Security Topic Center.
- Best iPhone, iPad Business Apps for 2014
- 14 Tech Conventions You Should Attend in 2014
- 10 Desktop Apps to Power Your Windows PC
- How to Add New Job Skills Without Going Back to School
- Slideshow: 7 security mistakes people make with their mobile device
- iOS vs. Android: Which is more secure?
- 11 sure signs you've been hacked
- The 12 PCI DSS 3.0 requirements addressed by Peer 1 Hosting This handy quick reference outlines the 12 PCI DSS 3.0 requirements, who needs to be compliant and how Alert Logic solutions address the...
- Defense Throughout the Vulnerability Life Cycle This whitepaper provides insight into how to leverage threat and log management technologies to protect your IT assets throughout their vulnerability life cycle.
- Alert Logic for PCI DSS Compliance To achieve PCI DSS compliance, you must identify and remediate all critical vulnerabilities detected during PCI scans. Threat Manager streamlines this process by...
- Cybersecurity Imperatives Reinvent Your Network Security With Palo Alto Networks The Rise of CyberSecurity
- Live Webcast On-demand webinar: "Mobility Mayhem: Balancing BYOD with Enterprise Security" Check out this on-demand webinar to hear Sophos senior security expert John Shier deep dive into how BYOD impacts your enterprise security strategy...
- Live Webcast Endpoint Backup & Restore: Protect Everyone, Everywhere Arek Sokol from the bleeding-edge IT team at Genentech/Roche explains how he leverages cross-platform enterprise endpoint backup in the public cloud as part...
- Streamline Software Asset Management, Compose a software Management Symphony Keeping track of your organization's software is easy with effective software management solutions from CDW. View the videos in our software solutions channel
- Druva inSync: Endpoint Data Protection & Governance CLICK HERE to watch this video about protecting corporate data on laptops and mobile devices, sponsored by Druva. All Security White Papers | Webcasts