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AUSCERT External Security Bulletin Redistribution
ESB-2023.3076
USN-6119-1: OpenSSL vulnerabilities
31 May 2023
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AusCERT Security Bulletin Summary
---------------------------------
Product: OpenSSL
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2023-2650 CVE-2023-1255
Original Bulletin:
https://ubuntu.com/security/notices/USN-6119-1
Comment: CVSS (Max): 5.9 CVE-2023-1255 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVSS Source: [NVD], Red Hat
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
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USN-6119-1: OpenSSL vulnerabilities
30 May 2023
Several security issues were fixed in OpenSSL.
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 23.04
o Ubuntu 22.10
o Ubuntu 22.04 LTS
o Ubuntu 20.04 LTS
o Ubuntu 18.04 ESM
Packages
o openssl - Secure Socket Layer (SSL) cryptographic library and tools
o openssl1.0 - Secure Socket Layer (SSL) cryptographic library and tools
Details
Matt Caswell discovered that OpenSSL incorrectly handled certain ASN.1
object identifiers. A remote attacker could possibly use this issue to
cause OpenSSL to consume resources, resulting in a denial of service.
( CVE-2023-2650 )
Anton Romanov discovered that OpenSSL incorrectly handled AES-XTS cipher
decryption on 64-bit ARM platforms. An attacker could possibly use this
issue to cause OpenSSL to crash, resulting in a denial of service. This
issue only affected Ubuntu 22.04 LTS, Ubuntu 22.10, and Ubuntu 23.04.
( CVE-2023-1255 )
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 23.04
o libssl3 - 3.0.8-1ubuntu1.2
Ubuntu 22.10
o libssl3 - 3.0.5-2ubuntu2.3
Ubuntu 22.04
o libssl3 - 3.0.2-0ubuntu1.10
Ubuntu 20.04
o libssl1.1 - 1.1.1f-1ubuntu2.19
Ubuntu 18.04
o libssl1.0.0 - 1.0.2n-1ubuntu5.13
o libssl1.1 - 1.1.1-1ubuntu2.1~18.04.23
After a standard system update you need to reboot your computer to make all
the necessary changes.
References
o CVE-2023-1255
o CVE-2023-2650
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