漏洞信息
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Vulnerability Title
Potential wildcard CNAME RPZ policy bypass
Vulnerability Description
An attacker who knows (or guesses) that a resolver uses RPZ with wildcard CNAME policies can craft query names long enough to trigger a NAMETOOLONG error condition during RPZ processing. This is not handled correctly and may lead to defeating the RPZ rule. It also may lead to an unexpected exit of the BIND 9 software. This issue affects BIND 9 versions 9.16.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.16.8-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Vulnerability Type
特殊元素过滤不恰当
Vulnerability Title
ISC BIND 9 输入验证错误漏洞
Vulnerability Description
ISC BIND 9是ISC组织的域名系统服务器。 ISC BIND 9 9.16.0版本至9.18.50版本、9.20.0版本至9.20.24版本、9.21.0版本至9.21.23版本、9.16.8-S1版本至9.18.50-S1版本和9.20.9-S1版本至9.20.24-S1版本存在输入验证错误漏洞,该漏洞源于RPZ处理中wildcard CNAME策略导致的NAMETOOLONG错误条件处理不当,可能使攻击者绕过RPZ规则,并可能导致BIND 9软件意外退出。
CVSS Information
N/A
Vulnerability Type
N/A