CVE-2001-0497
First published: Sat Jul 21 2001(Updated: )
dnskeygen in BIND 8.2.4 and earlier, and dnssec-keygen in BIND 9.1.2 and earlier, set insecure permissions for a HMAC-MD5 shared secret key file used for DNS Transactional Signatures (TSIG), which allows attackers to obtain the keys and perform dynamic DNS updates.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ISC BIND 9 | <=8.2.4 | |
| ISC BIND 9 | >=9.0<=9.1.2 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2001-0497?
CVE-2001-0497 has a high severity due to the potential for unauthorized access to sensitive HMAC-MD5 keys.
How do I fix CVE-2001-0497?
To fix CVE-2001-0497, update BIND to versions later than 8.2.4 and 9.1.2 which secure the permissions of the TSIG key files.
What software is affected by CVE-2001-0497?
CVE-2001-0497 affects BIND versions 8.2.4 and earlier as well as BIND 9.1.2 and earlier.
What is the impact of CVE-2001-0497?
The impact of CVE-2001-0497 allows attackers to obtain HMAC-MD5 shared secret keys enabling unauthorized dynamic DNS updates.
Is there a workaround for CVE-2001-0497?
A workaround for CVE-2001-0497 is to manually adjust the file permissions of the HMAC-MD5 key files to prevent unauthorized access.
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