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VuXML IDDescription
5033e2fc-98ec-4ef5-8e0b-87cfbbc73081php-gd and gd -- Buffer over-read into uninitialized memory

PHP developers report:

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.


Discovery 2017-08-02
Entry 2017-09-26
libgd
lt 2.2.5

php70-gd
lt 7.0.21

php71-gd
lt 7.1.7

https://bugs.php.net/bug.php?id=74435
CVE-2017-7890