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[{"id":483,"title":"Self-taught through trial and error","votes":545,"type":"x","order":1,"pct":78.42,"resources":[]},{"id":484,"title":"Formal training or courses","votes":30,"type":"x","order":2,"pct":4.32,"resources":[]},{"id":485,"title":"A job that required it","votes":34,"type":"x","order":3,"pct":4.89,"resources":[]},{"id":486,"title":"Other","votes":86,"type":"x","order":4,"pct":12.37,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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67

CIA And PayPal Under SSL Attack From Botnet Traffic Surge

The Central Intelligence Agency, PayPal, and hundreds of other organizations are under an unexplained assault that's bombarding their websites with millions of compute-intensive requests.. The "massive" flood of requests is made over the websites' SSL, or secure-sockets layer, port, causing them to consume more resources than normal connections, according to researchers at Shadowserver Foundation, a volunteer security collective. The torrent started about a week ago and appears to be caused by recent changes made to a botnet known as Pushdo. "What do I mean by massive? I mean you are likely seeing an unexpected increase in traffic by several million hits spread out across several hundred thousand IP addresses," Shadowserver' Steven Adair wrote. "This might be a big deal if you're used to only getting a few hundred or thousands of hits a day or you don't have unlimited bandwidth." The link for this article located at The Register is no longer available. . A mysterious DDoS attack strikes NASA, Google, and various institutions, inundating their servers with trillions of pings.. SSL Attack,Botnet Threat,Cybersecurity News,Traffic Surge,Resource Exhaustion. . LinuxSecurity.com Team

Calendar 2 Feb 01, 2010 User Avatar LinuxSecurity.com Team Cryptography
76

BindView: 2023-004 Moderate: TCP/IP Denial-of-Service Threats

A variety of denial-of-service vulnerabilities has been explored and documented by BindView's RAZOR Security Team. These vulnerabilities allow attackers to consume limited resources on victim machines. BindView's RAZOR Security Team has referred to these vulnerabilities as Naptha vulnerabilities. Denial-of-service attacks . . . . A variety of denial-of-service vulnerabilities has been explored and documented by BindView's RAZOR Security Team. These vulnerabilities allow attackers to consume limited resources on victim machines. BindView's RAZOR Security Team has referred to these vulnerabilities as Naptha vulnerabilities. Denial-of-service attacks are possible whenever an attacker can consume a limited resource on a victim's machine. Examples of the kinds of resources that an attacker can consume are CPU time, network bandwidth, and volatile and non-volatile memory. In addition, intruders can also attempt to consume limited data structures such as process slots, open file handles, or other data structures required for the operation of a machine or service. Recently, BindView's RAZOR Security Team has explored and documented a number of resource exhaustion attacks against TCP/IP services. TCP can be modeled as a finite state machine, consisting of eleven states (CLOSED, LISTEN, SYN RECVD, SYN SENT, ESTABLISHED, CLOSE WAIT, LAST ACK, FIN WAIT-1, FIN WAIT-2, CLOSING, and TIME WAIT) [1]. Implementations of TCP and services that use TCP rely on limited data structures to implement the states of the TCP finite state machine. By attacking specific weaknesses in applications and implementations of TCP, it is possible for an attacker to cause services or systems to crash, refuse service, or otherwise become unstable. A related attack, called a "syn flood attack,"[2] exploited a weakness in how many TCP implementations handled a large number of connections in the "SYN RECVD" state. Naptha attacks exploit weaknesses in the way some TCP stacks and applications handle large numbers of connections instates other than "SYN RECVD," including "ESTABLISHED" and "FIN WAIT-1." . Delve into denial-of-service weaknesses outlined by BindView's RAZOR Security Team, affecting TCP/IP architectures.. Denial Of Service,TCP/IP Security,Resource Exhaustion Attacks. . Anthony Pell

Calendar 2 Nov 30, 2000 User Avatar Anthony Pell Organizations/Events
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[{"id":483,"title":"Self-taught through trial and error","votes":545,"type":"x","order":1,"pct":78.42,"resources":[]},{"id":484,"title":"Formal training or courses","votes":30,"type":"x","order":2,"pct":4.32,"resources":[]},{"id":485,"title":"A job that required it","votes":34,"type":"x","order":3,"pct":4.89,"resources":[]},{"id":486,"title":"Other","votes":86,"type":"x","order":4,"pct":12.37,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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