The PHP core and extensions are written with the assumption that memory
allocation either succeeds, or the allocator bails out (i.e. the allocator
is infallible). Therefore the result of emalloc() and friends are not checked
for NULL values.
However, with USE_ZEND_ALLOC=0, malloc() and friends are used as allocators,
but these are fallible, i.e. they return NULL instead of bailing out if they
fail. This easily leads to invalid memory accesses in the following, such as
in <https://bugs.php.net/73032>. Some of these cases may constitute
exploitable vulnerabilities.
Therefore we make the infallible __zend_alloc() and friends the default for
USE_ZEND_ALLOC=0.
`command_length` is retrieved via strlen() and later passed to emalloc()
and memcpy(), so the appropriate type is `size_t`.
We don't add a regression test, because that would need to allocate a string
of at least 2 GiB.
* PHP-5.5:
fix#72519, possible OOB using imagegif
fix#72512, invalid read or write for palette image when invalid transparent index is used
Apparently some envs miss SIZE_MAX
Fix tests
Fix bug #72618: NULL Pointer Dereference in exif_process_user_comment
Partial fix for bug #72613 - do not treat negative returns from bz2 as size_t
Fix bug #72606: heap-buffer-overflow (write) simplestring_addn simplestring.c
Fix for bug #72558, Integer overflow error within _gdContributionsAlloc()
Fix bug #72603: Out of bound read in exif_process_IFD_in_MAKERNOTE
Fix bug #72562 - destroy var_hash properly
Fix bug #72533 (locale_accept_from_http out-of-bounds access)
Fix fir bug #72520
Fix for bug #72513
CS fix and comments with bug ID
Fix for HTTP_PROXY issue.
add tests for bug #72512
Fixed bug #72512 gdImageTrueColorToPaletteBody allows arbitrary write/read access
Fixed bug #72479 - same as #72434
Conflicts:
ext/bz2/bz2.c
main/SAPI.c
main/php_variables.c
* PHP-5.5:
Fixed bug #72446 - Integer Overflow in gdImagePaletteToTrueColor() resulting in heap overflow
update NEWS
fix tests
fix build
Fix bug #72455: Heap Overflow due to integer overflows
Fix bug #72434: ZipArchive class Use After Free Vulnerability in PHP's GC algorithm and unserialize
Fixed ##72433: Use After Free Vulnerability in PHP's GC algorithm and unserialize
Fix bug #72407: NULL Pointer Dereference at _gdScaleVert
Fix bug #72402: _php_mb_regex_ereg_replace_exec - double free
Fix bug #72298 pass2_no_dither out-of-bounds access
Fixed#72339 Integer Overflow in _gd2GetHeader() resulting in heap overflow
Fix bug #72262 - do not overflow int
Fix bug #72400 and #72403 - prevent signed int overflows for string lengths
Fix bug #72275: don't allow smart_str to overflow int
Fix bug #72340: Double Free Courruption in wddx_deserialize
update NEWS
Fix#66387: Stack overflow with imagefilltoborder
Skip test which is 64bits only
5.5.37 now
Conflicts:
configure.in
ext/mcrypt/mcrypt.c
ext/spl/spl_directory.c
main/php_version.h
