Comments (2)
MartinSpiessl
commented on July 20, 2024
1
Hi, from the blame log of the file @holznerst linked I see that I created it. In the commit message 97299d4 I mention issue #535, which contains a detailed description of the overflow.
tl;dr is that strlen(strerr) can lead to an integer close to INT_MAX, which is used in a signed integer addition to determine the length of the error message in bb_perror_msg, which will be the length of strerr plus some added stuff around that:
(unsigned long int)(applet_len + used + strerr_len + msgeol_len + 3) // overflow!
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holznerst
commented on July 20, 2024
Link to file: echo-2.c
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