Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Vulnerabilities / Threats

8/26/2011
08:52 AM
50%
50%

Apache Issues Workarounds For 'Killer' Attack

Development team spells out mitigation strategies for DDoS threat in advance of patch release.

A working proof-of-concept christened the "Apache Killer" released this week uses an as-yet unpatched flaw in the server software that pounds Apache servers with a distributed denial of service (DDoS) attack--and all it would take is one machine to bring the server to its knees.

The Apache development team late Wednesday issued an alert and workarounds in advance of rolling out a patch for the flaw in Apache HTTPD Web Server 1.3 and 2.X. The Apache Killer lets an attacker use a single PC to wage a denial of service attack against an Apache server.

"By sending specially crafted HTTP requests which include malformed range HTTP header, an attacker can disrupt the normal function of the Web server, thus disallowing legitimate users to receive responses from the Web server," the team's advisory said. "This issue affects all Apache software versions and a patch has not been released yet."

The underlying flaw was apparently first reported on bugtraq in 2007. "It appears due to its lack of sophistication that it did not get much attention by Apache developers and it has remained unpatched all of this time," wrote Kevin Shortt of the SANS Internet Storm Center, who noted that he had not yet tested the proof of concept (PoC), but planned to.

Meanwhile, vendors were stepping forward Thursday announcing their protections against the Apache Killer attack.

Sourcefire said its IPS and open-source Snort technology have been able to detect this flaw for several years and that its vulnerability research team Thursday beefed up that protection with a new rule specific to the Apache Killer.

Read the rest of this article on Dark Reading.

The vendors, contractors, and other outside parties with which you do business can create a serious security risk. Here's how to keep this threat in check. Also in the new, all-digital issue of Dark Reading: Why focusing solely on your own company's security ignores the bigger picture. Download it now. (Free registration required.)

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
Cybersecurity Team Holiday Guide: 2019 Gag Gift Edition
Ericka Chickowski, Contributing Writer,  12/2/2019
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Current Issue
Navigating the Deluge of Security Data
In this Tech Digest, Dark Reading shares the experiences of some top security practitioners as they navigate volumes of security data. We examine some examples of how enterprises can cull this data to find the clues they need.
Flash Poll
Rethinking Enterprise Data Defense
Rethinking Enterprise Data Defense
Frustrated with recurring intrusions and breaches, cybersecurity professionals are questioning some of the industrys conventional wisdom. Heres a look at what theyre thinking about.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2019-19647
PUBLISHED: 2019-12-09
radare2 through 4.0.0 lacks validation of the content variable in the function r_asm_pseudo_incbin at libr/asm/asm.c, ultimately leading to an arbitrary write. This allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via crafted input.
CVE-2019-19648
PUBLISHED: 2019-12-09
In the macho_parse_file functionality in macho/macho.c of YARA 3.11.0, command_size may be inconsistent with the real size. A specially crafted MachO file can cause an out-of-bounds memory access, resulting in Denial of Service (application crash) or potential code execution.
CVE-2019-19642
PUBLISHED: 2019-12-08
On SuperMicro X8STi-F motherboards with IPMI firmware 2.06 and BIOS 02.68, the Virtual Media feature allows OS Command Injection by authenticated attackers who can send HTTP requests to the IPMI IP address. This requires a POST to /rpc/setvmdrive.asp with shell metacharacters in ShareHost or ShareNa...
CVE-2019-19637
PUBLISHED: 2019-12-08
An issue was discovered in libsixel 1.8.2. There is an integer overflow in the function sixel_decode_raw_impl at fromsixel.c.
CVE-2019-19638
PUBLISHED: 2019-12-08
An issue was discovered in libsixel 1.8.2. There is a heap-based buffer overflow in the function load_pnm at frompnm.c, due to an integer overflow.