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AUSCERT External Security Bulletin Redistribution
ESB-2022.1628
USN-5371-1: nginx vulnerabilities
14 April 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: nginx
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2021-3618 CVE-2020-36309 CVE-2020-11724
Original Bulletin:
https://ubuntu.com/security/notices/USN-5371-1
Comment: CVSS (Max): 7.5 CVE-2020-11724 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
CVSS Source: NVD
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:H/A:N
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USN-5371-1: nginx vulnerabilities
12 April 2022
Several security issues were fixed in nginx.
Releases
o Ubuntu 21.10
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
o Ubuntu 16.04 ESM
Packages
o nginx - small, powerful, scalable web/proxy server
Details
It was discovered that nginx Lua module mishandled certain inputs.
An attacker could possibly use this issue to perform an HTTP Request
Smuggling attack. This issue only affects Ubuntu 18.04 LTS and
Ubuntu 20.04 LTS. ( CVE-2020-11724 )
It was discovered that nginx Lua module mishandled certain inputs.
An attacker could possibly use this issue to disclose sensitive
information. This issue only affects Ubuntu 18.04 LTS and
Ubuntu 20.04 LTS. ( CVE-2020-36309 )
It was discovered that nginx mishandled the use of
compatible certificates among multiple encryption protocols.
If a remote attacker were able to intercept the communication,
this issue could be used to redirect traffic between subdomains.
( CVE-2021-3618 )
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 21.10
o nginx-light - 1.18.0-6ubuntu11.1
o nginx-extras - 1.18.0-6ubuntu11.1
o nginx-core - 1.18.0-6ubuntu11.1
Ubuntu 20.04
o nginx-light - 1.18.0-0ubuntu1.3
o nginx-extras - 1.18.0-0ubuntu1.3
o libnginx-mod-http-lua - 1.18.0-0ubuntu1.3
o nginx-core - 1.18.0-0ubuntu1.3
o nginx-full - 1.18.0-0ubuntu1.3
Ubuntu 18.04
o nginx-light - 1.14.0-0ubuntu1.10
o nginx-extras - 1.14.0-0ubuntu1.10
o libnginx-mod-http-lua - 1.14.0-0ubuntu1.10
o nginx-core - 1.14.0-0ubuntu1.10
o nginx-full - 1.14.0-0ubuntu1.10
Ubuntu 16.04
o nginx-extras - 1.10.3-0ubuntu0.16.04.5+esm3
Available with UA Infra or UA Desktop
o nginx-core - 1.10.3-0ubuntu0.16.04.5+esm3
Available with UA Infra or UA Desktop
o nginx-light - 1.10.3-0ubuntu0.16.04.5+esm3
Available with UA Infra or UA Desktop
In general, a standard system update will make all the necessary changes.
References
o CVE-2020-36309
o CVE-2021-3618
o CVE-2020-11724
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