1. Ubuntu Security Notices
  2. USN-6119-1

USN-6119-1: OpenSSL vulnerabilities

Publication date

30 May 2023

Overview

Several security issues were fixed in OpenSSL.

Releases

Packages

  • openssl - Secure Socket Layer (SSL) cryptographic library and tools
  • 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)

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)

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
23.04 lunar libssl3 –  3.0.8-1ubuntu1.2
22.10 kinetic libssl3 –  3.0.5-2ubuntu2.3
22.04 jammy libssl3 –  3.0.2-0ubuntu1.10
20.04 focal libssl1.1 –  1.1.1f-1ubuntu2.19
18.04 bionic libssl1.0.0 –  1.0.2n-1ubuntu5.13
libssl1.1 –  1.1.1-1ubuntu2.1~18.04.23

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References

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