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v0.5.1
https://github.com/python/cpython
09 December 2020, 11:06:31 UTC
Revision 6c004b40f9d51872d848981ef1a18bb08c2dfc42 authored by Miro Hrončok on 08 December 2017, 21:34:44 UTC, committed by larryhastings on 08 December 2017, 21:34:44 UTC 
bpo-30657: Fix CVE-2017-1000158 (#4758)
 
Fixes possible integer overflow in PyBytes_DecodeEscape.

Co-Authored-By: Jay Bosamiya <jaybosamiya@gmail.com>
1 parent 8b11e8d
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Tip revision: 6c004b40f9d51872d848981ef1a18bb08c2dfc42 authored by Miro Hrončok on 08 December 2017, 21:34:44 UTC
bpo-30657: Fix CVE-2017-1000158 (#4758)
Tip revision: 6c004b4
pystrcmp.c 
/* Cross platform case insensitive string compare functions
 */

#include "Python.h"

int
PyOS_mystrnicmp(const char *s1, const char *s2, Py_ssize_t size)
{
    if (size == 0)
        return 0;
    while ((--size > 0) &&
           (tolower((unsigned)*s1) == tolower((unsigned)*s2))) {
        if (!*s1++ || !*s2++)
            break;
    }
    return tolower((unsigned)*s1) - tolower((unsigned)*s2);
}

int
PyOS_mystricmp(const char *s1, const char *s2)
{
    while (*s1 && (tolower((unsigned)*s1++) == tolower((unsigned)*s2++))) {
        ;
    }
    return (tolower((unsigned)*s1) - tolower((unsigned)*s2));
}
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