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PeFile: Defend against bad crafted import descriptors

Browse Source 
https://github.com/upx/upx/issues/143
	modified:   pefile.cpp
	modified:   pefile.h
This commit is contained in:
John Reiser
2017-11-08 11:07:46 -08:00
parent 19c2c1edcf
commit 5d9dcb634b
2 changed files with 54 additions and 10 deletions
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src/pefile.h
+11 -4
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@@ -178,10 +178,17 @@ protected:
ddirs_t *iddirs;
ddirs_t *oddirs;
LE32 &IDSIZE(unsigned x) { return iddirs[x].size; }
LE32 &IDADDR(unsigned x) { return iddirs[x].vaddr; }
LE32 &ODSIZE(unsigned x) { return oddirs[x].size; }
LE32 &ODADDR(unsigned x) { return oddirs[x].vaddr; }
__packed_struct(import_desc)
LE32 oft; // orig first thunk
char _[8];
LE32 dllname;
LE32 iat; // import address table
__packed_struct_end()
LE32 &IDSIZE(unsigned x);
LE32 &IDADDR(unsigned x);
LE32 &ODSIZE(unsigned x);
LE32 &ODADDR(unsigned x);
__packed_struct(pe_section_t)
char name[8];