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Message-ID: <d47bb80.ff77.1527e58ea1c.Coremail.xiaoqixue_1@163.com>
Date: Tue, 26 Jan 2016 22:31:42 +0800 (CST)
From: xiaoqixue_1 <xiaoqixue_1@....com>
To: oss-security@...ts.openwall.com
Cc: cve-assign@...re.org
Subject: a bug in gif2rgb.c in giflib-5.1.2
We find a memory allocation whose size could be zero in gif2rgb.c.
and It will result to several memory out of bound read and write. the bug in gif2rgb.c:386 :
386 if ((ScreenBuffer = (GifRowType *)
387 malloc(GifFile->SHeight * sizeof(GifRowType))) == NULL)
388 GIF_EXIT("Failed to allocate memory required, aborted.");
Please see "http://sourceforge.net/p/giflib/bugs/82/" for more details.
the bug was found by Qixue Xiao at Tsinghua University.
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