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Test ID:1.3.6.1.4.1.25623.1.0.844440
Category:Ubuntu Local Security Checks
Title:Ubuntu: Security Advisory for bind9 (USN-4365-1)
Summary:The remote host is missing an update for the 'bind9'; package(s) announced via the USN-4365-1 advisory.
Description:Summary:
The remote host is missing an update for the 'bind9'
package(s) announced via the USN-4365-1 advisory.

Vulnerability Insight:
Lior Shafir, Yehuda Afek, and Anat Bremler-Barr discovered that Bind
incorrectly limited certain fetches. A remote attacker could possibly use
this issue to cause Bind to consume resources, leading to a denial of
service, or possibly use Bind to perform a reflection attack.
(CVE-2020-8616)

Tobias Klein discovered that Bind incorrectly handled checking TSIG
validity. A remote attacker could use this issue to cause Bind to crash,
resulting in a denial of service, or possibly perform other attacks.
(CVE-2020-8617)

Affected Software/OS:
'bind9' package(s) on Ubuntu 20.04 LTS, Ubuntu 19.10, 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-2020-8616
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
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
CopyrightCopyright (C) 2020 Greenbone Networks GmbH

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