Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2020.2954
bind9 security update
28 August 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: bind9
Publisher: Debian
Operating System: Debian GNU/Linux 10
Impact/Access: Increased Privileges -- Existing Account
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-8624 CVE-2020-8623 CVE-2020-8622
CVE-2020-8619
Reference: ESB-2020.2888
ESB-2020.2881
ESB-2020.2872
ESB-2020.2105
Original Bulletin:
http://www.debian.org/security/2020/dsa-4752
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Debian Security Advisory DSA-4752-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
August 27, 2020 https://www.debian.org/security/faq
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Package : bind9
CVE ID : CVE-2020-8619 CVE-2020-8622 CVE-2020-8623 CVE-2020-8624
Debian Bug : 966497
Several vulnerabilities were discovered in BIND, a DNS server
implementation.
CVE-2020-8619
It was discovered that an asterisk character in an empty non-
terminal can cause an assertion failure, resulting in denial
of service.
CVE-2020-8622
Dave Feldman, Jeff Warren, and Joel Cunningham reported that a
truncated TSIG response can lead to an assertion failure, resulting
in denial of service.
CVE-2020-8623
Lyu Chiy reported that a flaw in the native PKCS#11 code can lead
to a remotely triggerable assertion failure, resulting in denial
of service.
CVE-2020-8624
Joop Boonen reported that update-policy rules of type "subdomain"
are enforced incorrectly, allowing updates to all parts of the zone
along with the intended subdomain.
For the stable distribution (buster), these problems have been fixed in
version 1:9.11.5.P4+dfsg-5.1+deb10u2.
We recommend that you upgrade your bind9 packages.
For the detailed security status of bind9 please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/bind9
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
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