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Test ID:1.3.6.1.4.1.25623.1.0.844545
Category:Ubuntu Local Security Checks
Title:Ubuntu: Security Advisory for bind9 (USN-4468-1)
Summary:The remote host is missing an update for the 'bind9'; package(s) announced via the USN-4468-1 advisory.
Description:Summary:
The remote host is missing an update for the 'bind9'
package(s) announced via the USN-4468-1 advisory.

Vulnerability Insight:
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. (CVE-2020-8620)

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. (CVE-2020-8621)

Dave Feldman, Jeff Warren, and Joel Cunningham discovered that Bind
incorrectly handled certain truncated responses to a TSIG-signed request. A
remote attacker could possibly use this issue to cause Bind to crash,
resulting in a denial of service. (CVE-2020-8622)

Lyu Chiy discovered that Bind incorrectly handled certain queries. A remote
attacker could possibly use this issue to cause Bind to crash, resulting in
a denial of service. (CVE-2020-8623)

Joop Boonen discovered that Bind incorrectly handled certain subdomain
update-policy rules. A remote attacker granted privileges to change certain
parts of a zone could use this issue to change other contents of the zone,
contrary to expectations. This issue only affected Ubuntu 18.04 LTS and
Ubuntu 20.04 LTS. (CVE-2020-8624)

Affected Software/OS:
'bind9' package(s) on Ubuntu 20.04 LTS, Ubuntu 18.04 LTS, Ubuntu 16.04 LTS.

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-2020-8620
https://kb.isc.org/docs/cve-2020-8620
https://security.gentoo.org/glsa/202008-19
https://usn.ubuntu.com/4468-1/
Common Vulnerability Exposure (CVE) ID: CVE-2020-8621
https://kb.isc.org/docs/cve-2020-8621
Common Vulnerability Exposure (CVE) ID: CVE-2020-8622
https://kb.isc.org/docs/cve-2020-8622
Debian Security Information: DSA-4752 (Google Search)
https://www.debian.org/security/2020/dsa-4752
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZKAMJZXR66P6S5LEU4SN7USSNCWTXEXP/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DQN62GBMCIC5AY4KYADGXNKVY6AJKSJE/
https://lists.debian.org/debian-lts-announce/2020/08/msg00053.html
https://usn.ubuntu.com/4468-2/
Common Vulnerability Exposure (CVE) ID: CVE-2020-8623
https://kb.isc.org/docs/cve-2020-8623
Common Vulnerability Exposure (CVE) ID: CVE-2020-8624
https://kb.isc.org/docs/cve-2020-8624
CopyrightCopyright (C) 2020 Greenbone Networks GmbH

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