Test ID:	1.3.6.1.4.1.25623.1.0.113847
Category:	General
Title:	ISC BIND Cache Poisoning Vulnerability (CVE-2021-25220) - Windows
Summary:	ISC BIND is prone to a cache poisoning vulnerability.
Description:	Summary: ISC BIND is prone to a cache poisoning vulnerability. Vulnerability Insight: When using forwarders, bogus NS records supplied by, or via, those forwarders may be cached and used by named if it needs to recurse for any reason, causing it to obtain and pass on potentially incorrect answers. Some examples of configurations that will be vulnerable are: - Resolvers using per zone or global forwarding with forward first (forward first is the default). - Resolvers not using global forwarding, but with per-zone forwarding with either forward first (the default) or forward only. - Resolvers configured with global forwarding along with zone statements that disable forwarding for part of the DNS namespace. Authoritative-only BIND 9 servers are not vulnerable to this flaw. Vulnerability Impact: The cache could become poisoned with incorrect records leading to queries being made to the wrong servers, which might also result in false information being returned to clients. Affected Software/OS: ISC BIND versions 9.1.0 through 9.11.36, 9.12.0 through 9.16.26, 9.11.4-S1 through 9.11.36-S1, 9.16.8-S1 through 9.16.26-S1 and 9.17.0 through 9.18.0. Versions of BIND 9 back to 9.1.0, including Supported Preview Editions - are believed to be affected but have not been tested by the vendor as they are EOL. Solution: Update to version 9.11.37, 9.16.27, 9.18.1, 9.11.37-S1, 9.16.27-S1 or later. CVSS Score: 4.0 CVSS Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2021-25220 https://kb.isc.org/v1/docs/cve-2021-25220 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/API7U5E7SX7BAAVFNW366FFJGD6NZZKV/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2SXT7247QTKNBQ67MNRGZD23ADXU6E5U/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NYD7US4HZRFUGAJ66ZTHFBYVP5N3OQBY/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DE3UAVCPUMAKG27ZL5YXSP2C3RIOW3JZ/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5VX3I2U3ICOIEI5Y7OYA6CHOLFMNH3YQ/ https://security.gentoo.org/glsa/202210-25 https://supportportal.juniper.net/s/article/2022-10-Security-Bulletin-Junos-OS-SRX-Series-Cache-poisoning-vulnerability-in-BIND-used-by-DNS-Proxy-CVE-2021-25220?language=en_US
Copyright	Copyright (C) 2022 Greenbone Networks GmbH

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