Date: Thu, 28 Jan 2016 03:04:17 +0000 From: limingxing <limingxing@....cn> To: "oss-security@...ts.openwall.com" <oss-security@...ts.openwall.com> Subject: invalid Read in the JasPer's jas_matrix_clip() function Hello, 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_; 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 "jasper_poc.zip" of type "application/octet-stream" (1097 bytes)
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