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A symlink race is a kind of software security vulnerability that results from a program creating files in an insecure manner. [1] A malicious user can create a symbolic link to a file not otherwise accessible to them.
Exploiting a TOCTOU race condition requires precise timing to ensure that the attacker's operations interleave properly with the victim's. In the example above, the attacker must execute the symlink system call precisely between the access and open. For the most general attack, the attacker must be scheduled for execution after each operation ...
Symlink race; System reconfiguration attacks; T. TCP reset attack; Terrapin attack; Threat (computer security) Threat model; Time-of-check to time-of-use;
A symbolic link contains a text string that is automatically interpreted and followed by the operating system as a path to another file or directory. This other file or directory is called the "target". The symbolic link is a second file that exists independently of its target. If a symbolic link is deleted, its target remains unaffected.
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, leading to unexpected or inconsistent results.
Article Maintenance categories; Committee on National Security Systems «Top» Articles lacking sources (Oct 2009), Articles needing expert attention (Oct 2009), Computer Security
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Their definition is persistent on the NTFS volume where they are created (all types of symbolic links can be removed as if they were files, using DEL symLink from a command line prompt or batch). [citation needed] The symbolic link data is similar to mount point data, in that both use an NT namespace path.