---
title: "CVE-1999-0835:  sig bug"
slug: "aa-00942"
description: "Denial of service in BIND named via malformed SIG records."
updated: 2014-10-28T08:50:00Z
published: 2014-10-28T08:50:00Z
---

> ## Documentation Index
> Fetch the complete documentation index at: https://kb.isc.org/llms.txt
> Use this file to discover all available pages before exploring further.

# CVE-1999-0835:  sig bug

Denial of service in BIND named via malformed SIG records.         
        




    
            
                      
              CVE: 


                    [CVE-1999-0835](http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-1999-0835)        


        






    
            
                      
              Posting date: 


                    11 Nov 1999        


        






    
            
                      
              Program Impacted: 


                    [BIND](https://www.isc.org/software/bind)        


        






    
            
                      
              Versions affected: 


                     4.9.5 - 4.9.6, 8.1 - 8.2.1        


        






    
            
                      
              Severity: 


                    Serious        


        






    
            
                      
              Exploitable: 


                    Remotely        


        






      Description: 


    
            
                    Improper validation of SIG record contents can trigger the DNS server crashing resulting in a denial of service attack. 


        


        






      Workarounds: 


    
            
                    None.


        


        






      Active exploits: 


    
            
                    None known at this time.        


        






      Solution: 


    
            
                    Upgrade to BIND 8.2.1 or later


        


        












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