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AUSCERT External Security Bulletin Redistribution
ESB-2020.1777.2
USN-4365-1: Bind vulnerabilities
21 May 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: Bind
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-8617 CVE-2020-8616
Reference: ESB-2020.1771
Original Bulletin:
https://usn.ubuntu.com/4365-1/
Comment: This bulletin contains two (2) Ubuntu security advisories.
Revision History: May 21 2020: Vendor issued minor update
May 20 2020: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
USN-4365-1: Bind vulnerabilities
19 May 2020
bind9 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 20.04 LTS
o Ubuntu 19.10
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Summary
Several security issues were fixed in Bind.
Software Description
o bind9 - Internet Domain Name Server
Details
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)
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 20.04 LTS
bind9 - 1:9.16.1-0ubuntu2.1
Ubuntu 19.10
bind9 - 1:9.11.5.P4+dfsg-5.1ubuntu2.2
Ubuntu 18.04 LTS
bind9 - 1:9.11.3+dfsg-1ubuntu1.12
Ubuntu 16.04 LTS
bind9 - 1:9.10.3.dfsg.P4-8ubuntu1.16
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
In general, a standard system update will make all the necessary changes.
References
o CVE-2020-8616
o CVE-2020-8617
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USN-4365-2: Bind vulnerabilities
20 May 2020
bind9 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 14.04 ESM
o Ubuntu 12.04 ESM
Summary
Several security issues were fixed in Bind.
Software Description
o bind9 - Internet Domain Name Server
Details
USN-4365-1 fixed several vulnerabilities in Bind. This update provides the
corresponding update for Ubuntu 12.04 ESM and 14.04 ESM.
Original advisory details:
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)
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 14.04 ESM
bind9 - 1:9.9.5.dfsg-3ubuntu0.19+esm2
Ubuntu 12.04 ESM
bind9 - 1:9.8.1.dfsg.P1-4ubuntu0.30
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
In general, a standard system update will make all the necessary changes.
References
o USN-4365-1
o CVE-2020-8616
o CVE-2020-8617
- --------------------------END INCLUDED TEXT--------------------
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