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PRIOn knowledge basePRION:CVE-2017-7890HistoryAug 02, 2017 - 7:29 p.m.
Information disclosure
2017-08-0219:29:00
PRIOn knowledge base
www.prio-n.com
6
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.
References
php.net/ChangeLog-5.php
php.net/ChangeLog-7.php
www.debian.org/security/2017/dsa-3938
www.securityfocus.com/bid/99492
access.redhat.com/errata/RHSA-2018:0406
access.redhat.com/errata/RHSA-2018:1296
bugs.php.net/bug.php?id=74435
bugs.php.net/patch-display.php?bug=74435&patch=fix-74435-php-7.0&revision=1497970038
security.netapp.com/advisory/ntap-20180112-0001/
www.tenable.com/security/tns-2017-12
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