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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Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: mitre
Published: 2017-08-02T19:00:00
Updated: 2024-08-05T16:19:29.486Z
Reserved: 2017-04-17T00:00:00
Link: CVE-2017-7890
Vulnrichment
No data.
NVD
Status : Modified
Published: 2017-08-02T19:29:00.897
Modified: 2024-11-21T03:32:54.193
Link: CVE-2017-7890
Redhat