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invalid memory read in SwapDWord #49

bestshow opened this issue Jun 8, 2017 · 3 comments

invalid memory read in SwapDWord #49

bestshow opened this issue Jun 8, 2017 · 3 comments


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@bestshow bestshow commented Jun 8, 2017

On Yerase TNEF Printer v1.9.2, an invalid memory read was found in the function SwapDWord.

#ytnefprint $FILE
 SEGV on unknown address 0x000000000008 (pc 0x00000052223d bp 0x7ffcf7d97890 sp 0x7ffcf7d976c0 T0)
==16379==The signal is caused by a READ memory access.
==16379==Hint: address points to the zero page.
    #0 0x52223c in SwapDWord /home/haojun/Downloads/ytnef-master/lib/ytnef.c:180:26
    #1 0x52223c in IsCompressedRTF /home/haojun/Downloads/ytnef-master/lib/ytnef.c:1479
    #2 0x52223c in MAPIPrint /home/haojun/Downloads/ytnef-master/lib/ytnef.c:1413
    #3 0x5164c2 in PrintTNEF /home/haojun/Downloads/ytnef-master/ytnefprint/main.c:169:5
    #4 0x51554a in main /home/haojun/Downloads/ytnef-master/ytnefprint/main.c:84:5
    #5 0x7f3f435d4b34 in __libc_start_main /usr/src/debug/glibc-2.17-c758a686/csu/../csu/libc-start.c:274
    #6 0x41a8db in _start (/home/haojun/Downloads/ytnef-afl-build/bin/ytnefprint+0x41a8db)

 SEGV /home/haojun/Downloads/ytnef-master/lib/ytnef.c:180:26 in SwapDWord

Credit : ADLab of Venustech

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@fgeek fgeek commented Aug 3, 2017

Please use CVE-2017-12142 for this issue.

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@ohwgiles ohwgiles commented May 31, 2018

It's not valid to call PrintTNEF on a TNEFStruct that did not correctly pass TNEFParse. Issue fixed with 35dc501

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@Yeraze Yeraze commented Jul 30, 2018

@Yeraze Yeraze closed this Jul 30, 2018
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