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Status Not under consideration
Workspace IBM i
Categories Languages - Other
Created by Guest
Created on Nov 15, 2022

ILE "C" insecure String functions

We have already created a support ticket with case number TS011234820 on the same.

As per the latest Insecure C functions that are documented everywhere, C program String functions like strcpy, strcat, strtok, and sprintf are considered unsafe and vulnerable. There are lot of external documents on this.

However in IBM ILE C programming, we haven't found any alternatives to these functions.

For example strcpy can be replaced with strcpy_s or strlcpy.

But We don't see these functions in IBM ILE C programming.

There is no CVE associated with it as this comes under proactive code cleanup effort.

There are CWEs associated with the code weakness listed below

Idea priority Medium
  • Guest
    Jan 13, 2023
    Thanks for your input.
    Currently there is no good/safer replacement/alternative for strcpy(strcat, strtok, sprintf, etc ) for IBM i, and the safer version, e.g. strcpy_s, is still not widely supported across platforms.
    When using these functions, for example strcpy, it is better to check that the destination buffer is large enough to hold the source string, and it is also better to check if there are overlap between the destination buffer and the source string buffer, and keeping them as a C programming best practice.
    The safer version of these functions, e.g. strcpy_s, are part pf C11 standard. We will consider adding strcpy_s support in the effort to certify C11 standard in the future(not near future).
    As it will not be delivered soon, so I decline it at present.