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AUSCERT External Security Bulletin Redistribution
ESB-2022.4697
USN-5626-1: 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-2022-38178 CVE-2022-38177 CVE-2022-3080
CVE-2022-2906 CVE-2022-2881 CVE-2022-2795
Original Bulletin:
https://ubuntu.com/security/notices/USN-5626-1
Comment: CVSS (Max): 7.5 CVE-2022-38178 (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-5626-1: Bind vulnerabilities
21 September 2022
Several security issues were fixed in Bind.
Releases
o Ubuntu 22.04 LTS
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
Packages
o bind9 - Internet Domain Name Server
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 statistics requests. A
remote attacker could possibly use this issue to obtain sensitive memory
contents, or cause a denial of service. This issue only affected Ubuntu
22.04 LTS. ( CVE-2022-2881 )
It was discovered that Bind incorrectly handled memory when processing
certain Diffie-Hellman key exchanges. A remote attacker could use this
issue to consume resources, leading to a denial of service. This issue only
affected Ubuntu 22.04 LTS. ( CVE-2022-2906 )
Maksym Odinintsev discovered that Bind incorrectly handled answers from
cache when configured with a zero stale-answer-timeout. A remote attacker
could possibly use this issue to cause Bind to crash, resulting in a denial
of service. This issue only affected Ubuntu 22.04 LTS. ( CVE-2022-3080 )
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. This issue only affected
Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. ( CVE-2022-38177 )
It was discovered that Bind incorrectly handled memory when processing
EDDSA DNSSEC verification. A remote attacker could use this issue to
consume resources, leading to a denial of service. ( CVE-2022-38178 )
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 22.04
o bind9 - 1:9.18.1-1ubuntu1.2
Ubuntu 20.04
o bind9 - 1:9.16.1-0ubuntu2.11
Ubuntu 18.04
o bind9 - 1:9.11.3+dfsg-1ubuntu1.18
In general, a standard system update will make all the necessary changes.
References
o CVE-2022-3080
o CVE-2022-2881
o CVE-2022-38177
o CVE-2022-2906
o CVE-2022-38178
o CVE-2022-2795
Related notices
o USN-5626-2 : libisccc140, liblwres90, libbind9-140, libisc-export160,
libdns162, libisccfg90, libisc160, libisccc-export140-udeb, host,
bind9-host, bind9-doc, libdns-export162, libisccc90, dnsutils, lwresd,
libdns100, libisccfg-export140, libbind9-90, libirs-export141,
libisccfg140, libbind-export-dev, bind9utils, libisccc-export140, libisc95,
libbind-dev, libirs141, bind9, liblwres141
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