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Session Poisoning
Session poisoning (also referred to as "session data pollution" and "session modification") is a method to exploit insufficient input validation within a server application. Typically a server application that is vulnerable to this type of exploit will copy user input into session variables. The underlying vulnerability is a state management problem: shared state, race condition, ambiguity in use or plain unprotected modifications of state values. Session poisoning has been demonstrated in server environments where different, non-malicious applications (scripts) share the same session states but where usage differ, causing ambiguity and race conditions. Session poisoning has been demonstrated in scenarios where attacker is able to introduce malicious scripts into the server environment, which is possible if attacker and victim share a web host. Origins Session poisoning was first discussed as a (potentially new) vulnerability class in the Full disclosure mailing list. Alla Bezr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exploit (computer Security)
An exploit (from the English verb ''to exploit'', meaning "to use something to one’s own advantage") is a piece of software, a chunk of data, or a sequence of commands that takes advantage of a bug or vulnerability to cause unintended or unanticipated behavior to occur on computer software, hardware, or something electronic (usually computerized). Such behavior frequently includes things like gaining control of a computer system, allowing privilege escalation, or a denial-of-service (DoS or related DDoS) attack. In lay terms, some exploit is akin to a 'hack'. Classification There are several methods of classifying exploits. The most common is by how the exploit communicates to the vulnerable software. A ''remote exploit'' works over a network and exploits the security vulnerability without any prior access to the vulnerable system. A ''local exploit'' requires prior access to the vulnerable system and usually increases the privileges of the person running the exploit past tho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Session (computer Science)
In computer science and networking in particular, a session is a time-delimited two-way link, a practical (relatively high) layer in the tcp/ip protocol enabling interactive expression and information exchange between two or more communication devices or ends – be they computers, automated systems, or live active users (see login session). A session is established at a certain point in time, and then ‘torn down’ - brought to an end - at some later point. An established communication session may involve more than one message in each direction. A session is typically stateful, meaning that at least one of the communicating parties needs to hold current state information and save information about the session history to be able to communicate, as opposed to stateless communication, where the communication consists of independent requests with responses. An established session is the basic requirement to perform a connection-oriented communication. A session also is the basic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Race Hazard
A race condition or race hazard is the condition of an electronics, software, or other system where the system's substantive behavior is dependent on the sequence or timing of other uncontrollable events. It becomes a bug when one or more of the possible behaviors is undesirable. The term ''race condition'' was already in use by 1954, for example in David A. Huffman's doctoral thesis "The synthesis of sequential switching circuits". Race conditions can occur especially in logic circuits, multithreaded, or distributed software programs. In electronics A typical example of a race condition may occur when a logic gate combines signals that have traveled along different paths from the same source. The inputs to the gate can change at slightly different times in response to a change in the source signal. The output may, for a brief period, change to an unwanted state before settling back to the designed state. Certain systems can tolerate such glitches but if this output function ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Full Disclosure (mailing List)
Full disclosure is a "lightly moderated" security mailing list generally used for discussion about information security and disclosure of vulnerabilities. The list was created on July 9, 2002 by Len Rose and also administered by him, who later handed it off to John Cartwright. After Len Rose shut down netsys.com, the list was hosted and sponsored by Secunia. The Full Disclosure mailing list was originally created because many people felt that the Bugtraq mailing list had "changed for the worse". In March 2014 Cartwright shutdown the original Full-Disclosure mailing list because an "unnamed" security researcher made requests for large-scale deletion of information and threatened legal action. Cartwright wrote on the list's homepage, "I always assumed that the turning point would be a sweeping request for large-scale deletion of information that some vendor or other had taken exception to. I never imagined that request might come from a researcher within the 'community' itself." O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bugtraq
Bugtraq was an electronic mailing list dedicated to issues about computer security. On-topic issues are new discussions about vulnerabilities, vendor security-related announcements, methods of exploitation, and how to fix them. It was a high-volume mailing list, with as many as 776 posts in a month, and almost all new security vulnerabilities were discussed on the list in its early days. The forum provided a vehicle for anyone to disclose and discuss computer vulnerabilities, including security researchers and product vendors. While the service has not been officially terminated, and its archives are still publicly accessible, no new posts have been made since January 2021. History Bugtraq was created on November 5, 1993 by Scott Chasin in response to the perceived failings of the existing Internet security infrastructure of the time, particularly CERT. Bugtraq's policy was to publish vulnerabilities, regardless of vendor response, as part of the full disclosure movement of vul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Session Fixation
In computer network security, session fixation attacks attempt to exploit the vulnerability of a system that allows one person to fixate (find or set) another person's session identifier. Most session fixation attacks are web based, and most rely on session identifiers being accepted from URLs (query string) or POST data. Attack scenarios Alice has an account at the bank http://unsafe.example.com/ Mallory intends to target Alice's money from her bank. Alice has a reasonable level of trust in Mallory, and will visit links Mallory sends her. A simple attack scenario Straightforward scenario: # Mallory has determined that http://unsafe.example.com/ accepts any session identifier, accepts session identifiers from query strings and has no security validation. http://unsafe.example.com/ is thus not secure. # Mallory sends Alice an e-mail: "Hey, check this out, there is a cool new account summary feature on our bank, http://unsafe.example.com/?SID=I_WILL_KNOW_THE_SID". Mallory i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Web Security Exploits
Web most often refers to: * Spider web, a silken structure created by the animal * World Wide Web or the Web, an Internet-based hypertext system Web, WEB, or the Web may also refer to: Computing * WEB, a literate programming system created by Donald Knuth * GNOME Web, a Web browser * Web.com, a web-design company * Webs (web hosting), a Web hosting and website building service Engineering * Web (manufacturing), continuous sheets of material passed over rollers ** Web, a roll of paper in offset printing * Web, the vertical element of an I-beam or a rail profile * Web, the interior beams of a truss Films * Web (2013 film), ''Web'' (2013 film), a documentary * Webs (film), ''Webs'' (film), a 2003 science-fiction movie * The Web (film), ''The Web'' (film), a 1947 film noir * Charlotte's Web (2006 film) Literature * Web (comics), ''Web'' (comics), a MLJ comicbook character (created 1942) * Web (novel), ''Web'' (novel), by John Wyndham (1979) * The Web (series), a science fiction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
