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Check PackHeader before decompress; CERT-FI id:000002,sig:06,src:000000,op:flip1,pos:4629

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John Reiser
2015-05-08 20:13:44 -07:00
parent 0151b3f9b3
commit 8c0321697f
1 changed files with 3 additions and 0 deletions
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src/packer.cpp
+3
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@@ -361,6 +361,9 @@ void ph_decompress(PackHeader &ph, const upx_bytep in, upx_bytep out,
} }
// decompress // decompress
if (ph.u_len < ph.c_len) {
throwCantUnpack("header corrupted");
}
unsigned new_len = ph.u_len; unsigned new_len = ph.u_len;
int r = upx_decompress(in, ph.c_len, out, &new_len, ph.method, &ph.compress_result); int r = upx_decompress(in, ph.c_len, out, &new_len, ph.method, &ph.compress_result);
if (r == UPX_E_OUT_OF_MEMORY) if (r == UPX_E_OUT_OF_MEMORY)