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| CodeSonar® 9.2p0 | CONFIDENTIAL | CodeSecure Inc |
A potentially-tainted value is used to construct a configuration setting.
| Class Name | Tainted Configuration Setting | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Significance | security | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Mnemonic | IO.TAINT.CONF | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Categories |
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| Availability | Available for C and C++. |
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| Enabling | Checks for this warning class are
disabled by default. To enable them, add the following WARNING_FILTER
rule to the project configuration file.
WARNING_FILTER += allow class="Tainted Configuration Setting" |
#include <stdio.h> #include <stdlib.h> #include <unistd.h> /* sethostid() is not present in all versions of unistd.h. * When present, it is only available to the superuser. */ int sethostid(long hostid); int set_specified_hostid(FILE *f){ char hostid[16]; if (fgets(hostid, 16, f) == NULL ) return -1; return sethostid(atol(hostid)); /* 'Tainted Configuration Setting' warning issued here */ }
CodeSonar ships with library models that allow it to recognize functions such as libc sethostid() and Win32 sethostid() that use one or more of their parameters to construct a configuration setting. If one of these functions is called with a potentially-tainted value in one of those parameter positions, a warning will be issued.
If you have created a custom library model for some function f() in terms of one of these existing models, calls to f() will also be capable of triggering Tainted Configuration Setting warnings.
The following configuration file parameters affect checks for this warning class.
To report problems with this documentation, please visit https://support.codesecure.com/.
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