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I. Basic Information for CVE-2020-8617
Vulnerability Information
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Vulnerability Title
A logic error in code which checks TSIG validity can be used to trigger an assertion failure in tsig.c
Source: NVD (National Vulnerability Database)
Vulnerability Description
Using a specially-crafted message, an attacker may potentially cause a BIND server to reach an inconsistent state if the attacker knows (or successfully guesses) the name of a TSIG key used by the server. Since BIND, by default, configures a local session key even on servers whose configuration does not otherwise make use of it, almost all current BIND servers are vulnerable. In releases of BIND dating from March 2018 and after, an assertion check in tsig.c detects this inconsistent state and deliberately exits. Prior to the introduction of the check the server would continue operating in an inconsistent state, with potentially harmful results.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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。 ISC BIND中存在安全漏洞。远程攻击者可利用该漏洞导致拒绝服务。以下产品及版本受到影响：BIND 9.0.0版本至9.11.18版本，9.12.0版本至9.12.4-P2版本，9.14.0版本至9.14.11版本，9.16.0版本至9.16.2版本，9.17.0版本至9.17.1版本，9.13版本，9.15版本，BIND Supported Preview Edition from 9.9.3-S1版本至9.11.18-S1版本。
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
VendorProductAffected VersionsCPESubscribe
ISCBIND9 9.0.0 -> 9.11.18, 9.12.0 -> 9.12.4-P2, 9.14.0 -> 9.14.11, 9.16.0 -> 9.16.2, and releases 9.17.0 -> 9.17.1 of the 9.17 experimental development branch. All releases in the obsolete 9.13 and 9.15 development branches. All releases of BIND Supported Preview -
II. Public POCs for CVE-2020-8617
#POC DescriptionSource LinkShenlong Link
1PoC for CVE-2020-8617 (BIND)https://github.com/knqyf263/CVE-2020-8617POC Details
2Nonehttps://github.com/rmkn/cve-2020-8617POC Details
3Nonehttps://github.com/gothburz/cve-2020-8617POC Details
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III. Intelligence Information for CVE-2020-8617
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IV. Related Vulnerabilities
Same product: BIND9
Same vendor: ISC
V. Comments for CVE-2020-8617

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