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CVE-2020-8621

Status Candidate

Overview

In BIND 9.14.0 -> 9.16.5, 9.17.0 -> 9.17.3, If a server is configured with both QNAME minimization and 'forward first' then an attacker who can send queries to it may be able to trigger the condition that will cause the server to crash. Servers that 'forward only' are not affected.

Related Files

Gentoo Linux Security Advisory 202008-19
Posted Aug 31, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202008-19 - Multiple vulnerabilities have been found in BIND, the worst of which could result in a Denial of Service condition. Versions less than 9.16.6 are affected.

tags | advisory, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2020-8620, CVE-2020-8621, CVE-2020-8622, CVE-2020-8623, CVE-2020-8624
SHA-256 | 7e86ed90997a56c060545bffa20785d25efa20fa00c9f3b6ccd5f08740562da0
Ubuntu Security Notice USN-4468-1
Posted Aug 21, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4468-1 - Emanuel Almeida discovered that Bind incorrectly handled certain TCP payloads. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS. Joseph Gullo discovered that Bind incorrectly handled QNAME minimization when used in certain configurations. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS. Various other issues were also addressed.

tags | advisory, remote, denial of service, tcp
systems | linux, ubuntu
advisories | CVE-2020-8620, CVE-2020-8621, CVE-2020-8622, CVE-2020-8623, CVE-2020-8624
SHA-256 | e68968b54f06a09f60aaea3f86c5fd5e18688a0dc2013d6d8a0ac01245a43511
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