Merge pull request #93 from fix-89-tainted-expression

Fix #89, Check get_sh_entsize(SectionHeader) value
nasa · Nov 3, 2021 · 5467a3a · 5467a3a
2 parents 10f55fb + 7fcf9ac
commit 5467a3a
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/elf2cfetbl.c b/elf2cfetbl.c
@@ -1774,7 +1774,14 @@ int32 GetSectionHeader(int32 SectionIndex, union Elf_Shdr *SectionHeader)
  SymbolTableDataOffset = SectionHeader->Shdr64.sh_offset + sizeof(Elf64_Sym);
  }
  SymbolTableEntrySize = get_sh_entsize(SectionHeader);
- NumSymbols = (get_sh_size(SectionHeader) / get_sh_entsize(SectionHeader)) - 1;
+ if (SymbolTableEntrySize == 0)
+ {
+ NumSymbols = 0;
+ }
+ else
+ {
+ NumSymbols = (get_sh_size(SectionHeader) / SymbolTableEntrySize) - 1;
+ }
  sprintf(VerboseStr, "SHT_SYMTAB (2) - # Symbols = %lu", (long unsigned int)NumSymbols);
  break;