|PSCAN(1)||General Commands Manual||PSCAN(1)|
NAME¶pscan - Format string security checker for C source code
DESCRIPTION¶pscan is a source code analysis tool which is designed to highlight potentially dangerous uses of variadic functions such as "printf", "syslog", etc. The scan works by looking for a one of a list of problem functions, and applying the following rule:
IF the last parameter of the function is the format string, AND the format string is NOT a static string, THEN complain.
LIMITATIONS¶The code will not report on some potention buffer overflows, because that is not its goal. For example the following code is potential dangerous:
sprintf(static_buffer, %s/.foorc", getenv("HOME"));"
This code could cause an issue as there is no immediately obvious bounds checking. However this is a safe usages with regards to format strings.