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CVE-2020-8624— update-policy rules of type "subdomain" are enforced incorrectly

Quick assessment

Affected
ISC BIND9
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ISC BIND是美国ISC公司的一套实现了DNS协议的开源软件。 BIND 9.9.12 至9.9.13, 9.10.7至9.10.8, 9.11.3至9.11.21, 9.12.1至9.16.5, 9.17.0 至9.17.3， 9.9.12-S1至9.9.13-S1, 9.11.3-S1至9.11.21-S1存在安全漏洞，攻击者可以恶意使用新增权限更新其他区域内容。

CVSS 4.3 · Medium EPSS 3.67% · P89

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2020-8624

Vulnerability Information
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Vulnerability Title
update-policy rules of type "subdomain" are enforced incorrectly
Source: CVE Program / CVE List V5
Vulnerability Description
In BIND 9.9.12 -> 9.9.13, 9.10.7 -> 9.10.8, 9.11.3 -> 9.11.21, 9.12.1 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.12-S1 -> 9.9.13-S1, 9.11.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker who has been granted privileges to change a specific subset of the zone's content could abuse these unintended additional privileges to update other contents of the zone.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
ISC BIND 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ISC BIND是美国ISC公司的一套实现了DNS协议的开源软件。 BIND 9.9.12 至9.9.13, 9.10.7至9.10.8, 9.11.3至9.11.21, 9.12.1至9.16.5, 9.17.0 至9.17.3， 9.9.12-S1至9.9.13-S1, 9.11.3-S1至9.11.21-S1存在安全漏洞，攻击者可以恶意使用新增权限更新其他区域内容。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ISC BIND9 9.9.12 ~ unspecified -

II. Public POCs for CVE-2020-8624

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III. Intelligence Information for CVE-2020-8624

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Vendor Advisories for CVE-2020-8624 (4)

Mailing List Discussions for CVE-2020-8624 (4)

Other References for CVE-2020-8624 (2)

Same Patch Batch · ISC · 2020-08-21 · 5 CVEs total

CVE-2020-8620 7.5 HIGH Internet Systems Consortium BIND server 安全漏洞
CVE-2020-8621 7.5 HIGH Attempting QNAME minimization after forwarding can lead to an assertion failure in resolve
CVE-2020-8623 7.5 HIGH A flaw in native PKCS#11 code can lead to a remotely triggerable assertion failure in pk11
CVE-2020-8622 6.5 MEDIUM A truncated TSIG response can lead to an assertion failure

IV. Related Vulnerabilities

Same product: BIND9
Same vendor: ISC

V. Comments for CVE-2020-8624

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