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Check ph.c_len; CERT-FI 829767

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id:000023,sig:06,src:000000,op:flip2,pos:10440
This commit is contained in:
John Reiser 2015-05-09 07:18:54 -07:00
parent 52f9ef14b9
commit 2cb7b56a41
1 changed files with 1 additions and 1 deletions
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2
src/p_lx_elf.cpp
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@ -3022,7 +3022,7 @@ void PackLinuxElf64::unpack(OutputFile *fo)
fi->readx(&bhdr, szb_info);
ph.u_len = get_te32(&bhdr.sz_unc);
ph.c_len = get_te32(&bhdr.sz_cpr);
if (ph.c_len > fi->st_size())
if (ph.c_len > fi->st_size() || ph.c_len == 0 || ph.u_len == 0)
throwCantUnpack("file header corrupted");
ph.filter_cto = bhdr.b_cto8;