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AUSCERT External Security Bulletin Redistribution
ESB-2022.4698
USN-5626-2: Bind vulnerabilities
23 September 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: Bind
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2022-38177 CVE-2022-2795
Original Bulletin:
https://ubuntu.com/security/notices/USN-5626-2
Comment: CVSS (Max): 7.5 CVE-2022-38177 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVSS Source: Red Hat
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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USN-5626-2: Bind vulnerabilities
21 September 2022
Several security issues were fixed in Bind.
Releases
o Ubuntu 16.04 ESM
o Ubuntu 14.04 ESM
Packages
o bind9 - Internet Domain Name Server
Details
USN-5626-1 fixed several vulnerabilities in Bind. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.
Original advisory details:
Yehuda Afek, Anat Bremler-Barr, and Shani Stajnrod discovered that Bind
incorrectly handled large delegations. A remote attacker could possibly use
this issue to reduce performance, leading to a denial of service.
( CVE-2022-2795 )
It was discovered that Bind incorrectly handled memory when processing
ECDSA DNSSEC verification. A remote attacker could use this issue to
consume resources, leading to a denial of service. ( CVE-2022-38177 )
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 16.04
o bind9 - 1:9.10.3.dfsg.P4-8ubuntu1.19+esm3
Available with UA Infra or UA Desktop
Ubuntu 14.04
o bind9 - 1:9.9.5.dfsg-3ubuntu0.19+esm7
Available with UA Infra or UA Desktop
In general, a standard system update will make all the necessary changes.
References
o CVE-2022-38177
o CVE-2022-2795
Related notices
o USN-5626-1 : bind9-dev, libdns1100, bind9-libs, bind9-dnsutils, libirs160,
libbind-export-dev, liblwres160, libisccfg160, libdns-export1100,
libisccc160, libisccfg-export160, libisccc-export160, bind9-utils,
bind9-host, libirs-export160, dnsutils, bind9, libbind-dev,
libisc-export169, bind9-doc, bind9utils, libbind9-160, libisc169
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