Test ID:	1.3.6.1.4.1.25623.1.0.704689
Category:	Debian Local Security Checks
Title:	Debian: Security Advisory (DSA-4689-1)
Summary:	The remote host is missing an update for the Debian 'bind9' package(s) announced via the DSA-4689-1 advisory.
Description:	Summary: The remote host is missing an update for the Debian 'bind9' package(s) announced via the DSA-4689-1 advisory. Vulnerability Insight: Several vulnerabilities were discovered in BIND, a DNS server implementation. CVE-2019-6477 It was discovered that TCP-pipelined queries can bypass tcp-client limits resulting in denial of service. CVE-2020-8616 It was discovered that BIND does not sufficiently limit the number of fetches performed when processing referrals. An attacker can take advantage of this flaw to cause a denial of service (performance degradation) or use the recursing server in a reflection attack with a high amplification factor. CVE-2020-8617 It was discovered that a logic error in the code which checks TSIG validity can be used to trigger an assertion failure, resulting in denial of service. For the oldstable distribution (stretch), these problems have been fixed in version 1:9.10.3.dfsg.P4-12.3+deb9u6. For the stable distribution (buster), these problems have been fixed in version 1:9.11.5.P4+dfsg-5.1+deb10u1. We recommend that you upgrade your bind9 packages. For the detailed security status of bind9 please refer to its security tracker page at: [link moved to references] Affected Software/OS: 'bind9' package(s) on Debian 9, Debian 10. Solution: Please install the updated package(s). CVSS Score: 5.0 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2020-8616 Debian Security Information: DSA-4689 (Google Search) https://www.debian.org/security/2020/dsa-4689 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WOGCJS2XQ3SQNF4W6GLZ73LWZJ6ZZWZI/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JKJXVBOKZ36ER3EUCR7VRB7WGHIIMPNJ/ http://www.nxnsattack.com https://lists.debian.org/debian-lts-announce/2020/05/msg00031.html http://www.openwall.com/lists/oss-security/2020/05/19/4 SuSE Security Announcement: openSUSE-SU-2020:1699 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html SuSE Security Announcement: openSUSE-SU-2020:1701 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html https://usn.ubuntu.com/4365-1/ https://usn.ubuntu.com/4365-2/ Common Vulnerability Exposure (CVE) ID: CVE-2020-8617 http://packetstormsecurity.com/files/157836/BIND-TSIG-Denial-Of-Service.html
Copyright	Copyright (C) 2020 Greenbone AG

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