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.
History

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cve-icon MITRE Information

Status: PUBLISHED

Assigner: mitre

Published: 2017-08-02T19:00:00

Updated: 2018-05-03T09:57:01

Reserved: 2017-04-17T00:00:00


Link: CVE-2017-7890

JSON object: View

cve-icon NVD Information

Status : Modified

Published: 2017-08-02T19:29:00.897

Modified: 2018-05-04T01:29:09.503


Link: CVE-2017-7890

JSON object: View

cve-icon Redhat Information

No data.

CWE