The GIF decoding function gdImageCreateFromGifCtx in gd_gif_in.c in the GD Graphics Library (aka libgd), as used in PHP before 5.6.31 and 7.x before 7.1.7, does not zero colorMap arrays before use. A specially crafted GIF image could use the uninitialized tables to read ~700 bytes from the top of the stack, potentially disclosing sensitive information.

The GIF decoding function gdImageCreateFromGifCtx in gd_gif_in.c in the GD Graphics Library (aka libgd), as used in PHP before 5.6.31 and 7.x before 7.1.7, does not zero colorMap arrays before use. A specially crafted GIF image could use the uninitialized tables to read ~700 bytes from the top of the stack, potentially disclosing sensitive information.

gd-2.3.3-1.1 on GA media

php: Heap overflow in mysqlnd when not receiving UNSIGNED_FLAG in BIT field php: Use after free in wddx_deserialize php: Out of bounds heap read when verifying signature of zip phar in phar_parse_zipfile php: Stack based buffer overflow in msgfmt_format_message php: Missing type check when unserializing SplArray php: Null pointer dereference in php_wddx_push_element php: Use-after-free vulnerability when resizing the 'properties' hash table of a serialized object gd: Stack overflow in gdImageFillToBorder on truecolor images php: NULL Pointer Dereference in WDDX Packet Deserialization with PDORow php: Invalid read when wddx decodes empty boolean element php: Use After Free in unserialize() php: Wrong calculation in exif_convert_any_to_int function php: Integer overflow in phar_parse_pharfile php: Off-by-one error in phar_parse_pharfile when loading crafted phar archive php: Out-of-bounds heap read on unserialize in finish_nested_data() php: Null pointer dereference when unserializing PHP object gd: DoS vulnerability in gdImageCreateFromGd2Ctx() gd: Integer overflow in gd_io.c php: Use of uninitialized memory in unserialize() php: Buffer over-read from unitialized data in gdImageCreateFromGifCtx function oniguruma: Out-of-bounds stack read in match_at() during regular expression searching oniguruma: Heap buffer overflow in next_state_val() during regular expression compilation oniguruma: Out-of-bounds stack read in mbc_enc_len() during regular expression searching oniguruma: O…

Security update for php7

Affected: Ubuntu:14.04:LTS: libgd2, Ubuntu:16.04:LTS: libgd2

The GIF decoding function gdImageCreateFromGifCtx in gd_gif_in.c in the GD Graphics Library (aka libgd), as used in PHP before 5.6.31 and 7.x before 7.1.7, does not zero colorMap arrays before use. A specially crafted GIF image could use the uninitialized tables to read ~700 bytes from the top of the stack, potentially disclosing sensitive information.