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USN-6622-1: OpenSSL vulnerabilities

5 February 2024

Several security issues were fixed in OpenSSL.

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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.

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Releases

Packages

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

Details

David Benjamin discovered that OpenSSL incorrectly handled excessively long
X9.42 DH keys. A remote attacker could possibly use this issue to cause
OpenSSL to consume resources, leading to a denial of service.
(CVE-2023-5678)

Sverker Eriksson discovered that OpenSSL incorrectly handled POLY1304 MAC
on the PowerPC architecture. A remote attacker could use this issue to
cause OpenSSL to crash, resulting in a denial of service, or possibly
execute arbitrary code. This issue only affected Ubuntu 22.04 LTS and
Ubuntu 23.04. (CVE-2023-6129)

It was discovered that OpenSSL incorrectly handled excessively long RSA
public keys. A remote attacker could possibly use this issue to cause
OpenSSL to consume resources, leading to a denial of service. This issue
only affected Ubuntu 22.04 LTS and Ubuntu 23.04. (CVE-2023-6237)

Bahaa Naamneh discovered that OpenSSL incorrectly handled certain malformed
PKCS12 files. A remote attacker could possibly use this issue to cause
OpenSSL to crash, resulting in a denial of service. (CVE-2024-0727)

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 23.10
Ubuntu 22.04
Ubuntu 20.04

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

Related notices

  • USN-6632-1: libssl1.1, libssl-doc, openssl, libssl1.0.0, libssl-dev
  • USN-6709-1: openssl1.0, libssl1.0-dev, libssl1.0.0