Knowledge Base ISC Main Website Ask a Question/Contact ISC
CVE-2001-0011: Buffer overflow in nslookupComplain()
Author: Cathy Almond Reference Number: AA-00948 Views: 1722 Created: 2013-05-29 13:59 Last Updated: 2014-10-28 14:09 0 Rating/ Voters

Buffer overflow in nslookupComplain function in BIND 4 allows remote attackers to gain root privileges

CVE: 
CVE-2001-0011
CERT
VU#572183
Posting date: 
29 Jan 2001
Program Impacted: 
BIND
Versions affected: 
4.9.3 - 4.9.7
Severity: 
Serious
Exploitable: 
Remotely
Description: 

A buffer overflow exists in the nslookupComplain() routine.

The vulnerable buffer is a locally defined character array used to build an error message intended for syslog. Attackers attempting to exploit this vulnerability could do so by sending a specially formatted DNS query to affected BIND servers. If properly constructed, this query could be used to disrupt the normal operation of the DNS server process, resulting in either denial of service or the execution of arbitrary code. If an attacker were able to execute code or commands, they would do so with the same privileges as the BIND process, which are typically superuser privileges.

Workarounds: 

None.

Active exploits: 
Exploits for this bug exist.
Solution: 

Upgrade to 4.9.8 or later.



© 2001-2016 Internet Systems Consortium

Please help us to improve the content of our knowledge base by letting us know below how we can improve this article.

If you have a technical question or problem on which you'd like help, please don't submit it here as article feedback.

For assistance with problems and questions for which you have not been able to find an answer in our Knowledge Base, we recommend searching our community mailing list archives and/or posting your question there (you will need to register there first for your posts to be accepted). The bind-users and the dhcp-users lists particularly have a long-standing and active membership.

ISC relies on the financial support of the community to fund the development of its open source software products. If you would like to support future product evolution and maintenance as well having peace of mind knowing that our team of experts are poised to provide you with individual technical assistance whenever you call upon them, then please consider our Professional Subscription Support services - details can be found on our main website.

Feedback
  • There is no feedback for this article
Info Submit Feedback on this Article
Nickname: Your Email: Subject: Comment:
Enter the code below:
Quick Jump Menu