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AUSCERT External Security Bulletin Redistribution
ESB-2023.3079
USN-6121-1: Nanopb vulnerabilities
31 May 2023
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AusCERT Security Bulletin Summary
---------------------------------
Product: Nanopb
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2021-21401 CVE-2020-26243
Original Bulletin:
https://ubuntu.com/security/notices/USN-6121-1
Comment: CVSS (Max): 7.5 CVE-2020-26243 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
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:N/A:H
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USN-6121-1: Nanopb vulnerabilities
30 May 2023
Several security issues were fixed in Nanopb.
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and
Universe repositories, and it is free for up to five machines.
Learn more about Ubuntu Pro
Releases
o Ubuntu 20.04 LTS
Packages
o nanopb - Protocol Buffers with small code size
Details
It was discovered that Nanopb incorrectly handled certain decode messages.
An attacker could possibly use this cause a denial of service or expose
sensitive information. ( CVE-2020-26243 )
It was discovered that Nanopb incorrectly handled certain decode messages.
An attacker could possibly use this issue to cause a denial of service
or execute arbitrary code. ( CVE-2021-21401 )
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and
Universe repositories, and it is free for up to five machines.
Learn more about Ubuntu Pro
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 20.04
o nanopb - 0.4.1-1ubuntu0.1~esm1
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References
o CVE-2021-21401
o CVE-2020-26243
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