| Package | Affected versions | Patched versions |
|---|---|---|
| php | = 7.0.0= 7.0.1= 7.0.10= 7.0.11= 7.0.12= 7.0.13= 7.0.14= 7.0.15= 7.0.16= 7.0.17= 7.0.18= 7.0.19= 7.0.2= 7.0.20= 7.0.3= 7.0.4= 7.0.5= 7.0.6= 7.0.7= 7.0.8= 7.0.9= 7.1.0= 7.1.1= 7.1.2= 7.1.3= 7.1.4= 7.1.5= 7.1.6≤ 5.6.30 |
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.
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