Uncovering Covert Command-and-Control Channels

As the line between securely hosted and controlled enterprise applications and cloud-based applications continues to blur, there’s more “legitimate” traffic between corporate networks and the Internet than ever before. This opens up new vectors for attack by hackers and cybercriminals as more...

The Five Key Things to Know About the Security of Your Networking Gear

Measuring the performance and security of your network equipment has never been more important than it is today. While there will always be tradeoffs between maximum throughput and maximum security, I want to emphasize the “and” in “performance and security.” Your devices must perform while...

Net Solutions' Hack Heightens Role of ISP in App Layer Security

According to research, the malicious iframe used in the latest Network Solutions attack pointed to corpadsinc.com which then downloads Adobe exploits onto victims’ machines. The hacks raise an issue increasingly being faced by Website owners: what’s the responsibility of the ISP or service or clo...

Geo++(R) GNCASTER Insecure Handling Of NMEA-Data

Advisory: Geo++R GNCASTER: Insecure handling of NMEA-data During a penetration test, RedTeam Pentesting discovered that the GNCaster software does not handle NMEA-data correctly. An attacker that has valid login credentials can use this to crash the server software or potentially execute code on...

Network Weaknesses Exposed at 26C3 Berlin

At the 26th Chaos Communication Congress in Berlin, security researcher Fabian Yamaguchi demonstrated a number of vulnerabilities that can apparently be found in many average communication networks and affect all levels from the access layer to the application layer. Read the full article. The H...

TLS Renegotiation Vulnerability: Proof of Concept Code (Python)

Information about a vulnerability in the TLS protocol was published in the beginning of November 2009. Attackers can take advantage of that vulnerability to inject arbitrary prefixes into a network connection protected by TLS. This can result in severe vulnerabilities, depending on the applicatio...

Preemptive Protection against Microsoft ISA Server Cross-Site Scripting (XSS) Vulnerability (MS09-016)

A cross-site scripting XSS vulnerability has been reported in the cookieauth.dll component in Microsoft Internet Security and Acceleration ISA Server. ISA Server, originating as Microsoft Proxy Server, is a Firewall & Security product that provides Application-Layer Firewalling, acts as a VPN...

Rookie Edition Expliot the guidelines for the preparation of the PNP the overflow vulnerability analysis+exploit-vulnerability warning-the black bar safety net

A month ago, and chat with friends, talked about now on the network, worms, viruses are increasingly rampant, the year before the“shock wave”, last year's“shock wave”, this year also don't know and out of what? The voice just fell, the one is named Zotob worm has been in a 8 on 1 to 5 November...

Cisco VPN 3000 Concentrator Multiple Service Banner System Information Disclosure (CSCdu35577 HTTP Check)

The remote VPN concentrator gives out too much information in application layer banners. An incorrect page request provides the specific version of software installed. This vulnerability is documented as Cisco bug ID CSCdu35577. %NASLMINLEVEL 70300 This script was written by Michael J. Richardson...

Cisco VPN 3000 Concentrator Multiple Service Banner System Information Disclosure (CSCdu35577)

According to its banner, the remote VPN concentrator gives out too much information in application layer banners. This vulnerability is documented as Cisco bug ID CSCdu35577. C Tenable Network Security, Inc. Thanks to Nicolas FISCHBACH [email protected] for his help Ref:...

Multiple vendors' firewalls do not adequately keep state of FTP traffic

Overview Firewalls and other systems that inspect FTP application layer traffic may not adequately maintain the state of FTP commands and responses. As a result, an attacker could establish arbitrary TCP connections to FTP servers or clients located behind a vulnerable firewall. Description Many...

Lotus Domino vulnerable to DoS via large crafted URL request

Overview The Lotus Domino Web Server contains a flaw that could be exploited to cause a denial of service. Description HTTP requests to TCP port 80 consisting of multiple /'s, approximately 8k worth, will result in the consumption of the CPU 99-100%. Typically, 8k of the character "a" results in...