Merge pull request #1047 from FFRI/fix-out-of-range

fix ASN1Reader::tag2str
lief-project · Apr 27, 2024 · 54d0a72 · 54d0a72
2 parents 4d8211a + 10fa404
commit 54d0a72
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/BinaryStream/ASN1Reader.cpp b/src/BinaryStream/ASN1Reader.cpp
@@ -473,6 +473,10 @@ std::string ASN1Reader::tag2str(int tag) {
   HANDLE(ASN1_CONSTRUCTED);
   HANDLE(ASN1_CONTEXT_SPECIFIC);
 
+  if (tag_str.size() < 3) {
+    return "MBEDTLS_ASN1_UNKNOWN";
+  }
+
   return tag_str.substr(3);
 #undef HANDLE
 }