Bug #71729 [NEW]: Possible crash in zend_bin_strtod, zend_oct_strtod, zend_hex_strtod

From: temp at temp dot ru Operating system: PHP version: 7.0.4 Package: *General Issues Bug Type: Bug Bug description:Possible crash in zend_bin_strtod, zend_oct_strtod, zend_hex_strtod Description: ------------ These three function has a flaw that can eventually result in crash: ZEND_API double zend_bin_strtod(const char *str, const char **endptr) { ... if (strlen(str) < 2) { *endptr = str; <--- No check if endptr is NULL, can result in zero pointer dereferencing return 0.0; } ... if (NULL != endptr) { <--- But here this check is present *endptr = (char *)(any ? s - 1 : str); } return value; } -- Edit bug report at https://bugs.php.net/bug.php?id=71729&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=71729&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=71729&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=71729&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=71729&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=71729&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=71729&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=71729&r=needscript Try newer version: https://bugs.php.net/fix.php?id=71729&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=71729&r=support Expected behavior: https://bugs.php.net/fix.php?id=71729&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=71729&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=71729&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=71729&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=71729&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=71729&r=dst IIS Stability: https://bugs.php.net/fix.php?id=71729&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=71729&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=71729&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=71729&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=71729&r=mysqlcfg