PT-2001-1707 · Isc · Bind

Published 2001-07-21 · Updated 2024-02-08 · CVE-2001-0497

Positive Technologies (AI Summary)

CVSS v2.0

4.6

Medium

Base vector

AV:L/AC:L/Au:N/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions: BIND versions 8.2.4 and earlier BIND versions 9.1.2 and earlier

Description: The issue allows attackers to obtain HMAC-MD5 shared secret keys used for DNS Transactional Signatures (TSIG) due to insecure permissions set by dnskeygen in BIND 8 and dnssec-keygen in BIND 9. This could enable attackers to perform dynamic DNS updates.

Recommendations: For BIND versions 8.2.4 and earlier, update the permissions of the HMAC-MD5 shared secret key file to secure it. For BIND versions 9.1.2 and earlier, update the permissions of the HMAC-MD5 shared secret key file to secure it. As a temporary workaround, consider restricting access to the dnssec-keygen and dnskeygen tools until a patch is available.

Fix

Incorrect Default Permissions

Weakness Enumeration

CWE-276

Related Identifiers

CVE-2001-0497

Affected Products

Bind

References · 4

• http://xforce.iss.net/alerts/advise78.php · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2001-0497 · Security Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/6694 · Note
• http://osvdb.org/5609 · Note