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Date: Thu, 28 Jan 2016 03:04:17 +0000
From: limingxing <>
To: "" <>
Subject: invalid Read in the JasPer's jas_matrix_clip() function

We find another vulnerability in the way JasPer's jas_matrix_clip() function parsed certain JPEG 2000 image files.
I was successful in reproducing this issuel in the jasper-1.900.1-31.fc23.src.
The gdb info was:
Starting program: ./jasper-1.900.1-31.fc23.src/jasper-1.900.1/src/appl/jasper -f ./jasper_poc/poc.jp2 -F temp.out -t jp2 -T bmp

Program received signal SIGSEGV, Segmentation fault.
0x0805604b in jas_matrix_clip (matrix=0x8bc42f0, minval=0, maxval=255)
    at jas_seq.c:286
286		for (i = matrix->numrows_, rowstart = matrix->rows_[0]; i > 0; --i,
(gdb) bt
#0  0x0805604b in jas_matrix_clip (matrix=0x8bc42f0, minval=0, maxval=255)
    at jas_seq.c:286
#1  0x08066af5 in jpc_dec_tiledecode (dec=0x81a05b8, tile=0xb785c008)
    at jpc_dec.c:1117
#2  0x08064e7f in jpc_dec_process_sod (dec=0x81a05b8, ms=0x81a0628)
    at jpc_dec.c:621
#3  0x080647f4 in jpc_dec_decode (dec=0x81a05b8) at jpc_dec.c:390
#4  0x0806450f in jpc_decode (in=0x819c308, optstr=0x0) at jpc_dec.c:254
#5  0x08058e5e in jp2_decode (in=0x819c308, optstr=0x0) at jp2_dec.c:215
#6  0x08052ba9 in jas_image_decode (in=0x819c308, fmt=4, optstr=0x0)
    at jas_image.c:379
#7  0x08049158 in main (argc=9, argv=0xbffff094) at jasper.c:229

This vulnerability was found by Qihoo 360 Codesafe Team
Download attachment "" of type "application/octet-stream" (1097 bytes)

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