CVE-2013-6230

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-11-08 · updated 2026-06-17
Weakness: CWE-264

Description

The Winsock WSAIoctl API in Microsoft Windows Server 2008, as used in ISC BIND 9.6-ESV before 9.6-ESV-R10-P1, 9.8 before 9.8.6-P1, 9.9 before 9.9.4-P1, 9.9.3-S1, 9.9.4-S1, and other products, does not properly support the SIO_GET_INTERFACE_LIST command for netmask 255.255.255.255, which allows remote attackers to bypass intended IP address restrictions by leveraging misinterpretation of this netmask as a 0.0.0.0 netmask.

Affected products

ISC BIND: 9.6, 9.6-r5_p1, 9.6-r6_b1, 9.6-r6_rc1, 9.6-r6_rc2, 9.6-r7_p1 (+52)

References

http://www.slackware.com/security/viewer.php?l=slackware-security&y=2014&m=slackware-security.518391
https://kb.isc.org/article/AA-01062
https://kb.isc.org/article/AA-01063
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2014&m=slackware-security.518391
https://kb.isc.org/article/AA-01062
https://kb.isc.org/article/AA-01063

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