APER - Check that calculated rawLength is not zero

onosproject · Jan 3, 2024 · 46cd063 · 46cd063
1 parent 91811b3
commit 46cd063
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/pkg/asn1/aper/aper.go b/pkg/asn1/aper/aper.go
@@ -578,6 +578,10 @@ func (pd *perBitData) parseInteger(extensed bool, lowerBoundPtr *int64, upperBou
 		rawLength = uint(pd.bytes[pd.byteOffset])
 		pd.byteOffset++
 		log.Debugf("%s", perBitLog(8, pd.byteOffset, pd.bitsOffset, uint64(rawLength)))
+	  if rawLength == 0 {
+		  err := fmt.Errorf("rawLength cannot be 0")
+		  return int64(0), err
+	  }
 	} else if valueRange <= 65536 {
 		rawValue, err := pd.parseConstraintValue(valueRange)
 		if err != nil {