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Ubuntu Security Notice USN-6119-1

Ubuntu Security Notice 6119-1 - 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. 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.

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#vulnerability#ubuntu#dos#ssl

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Ubuntu Security Notice USN-6119-1
May 30, 2023

openssl, openssl1.0 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 23.04
  • Ubuntu 22.10
  • Ubuntu 22.04 LTS
  • Ubuntu 20.04 LTS
  • Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in OpenSSL.

Software Description:

  • 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)

Update instructions:

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

Ubuntu 23.04:
libssl3 3.0.8-1ubuntu1.2

Ubuntu 22.10:
libssl3 3.0.5-2ubuntu2.3

Ubuntu 22.04 LTS:
libssl3 3.0.2-0ubuntu1.10

Ubuntu 20.04 LTS:
libssl1.1 1.1.1f-1ubuntu2.19

Ubuntu 18.04 LTS:
libssl1.0.0 1.0.2n-1ubuntu5.13
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:
https://ubuntu.com/security/notices/USN-6119-1
CVE-2023-1255, CVE-2023-2650

Package Information:
https://launchpad.net/ubuntu/+source/openssl/3.0.8-1ubuntu1.2
https://launchpad.net/ubuntu/+source/openssl/3.0.5-2ubuntu2.3
https://launchpad.net/ubuntu/+source/openssl/3.0.2-0ubuntu1.10
https://launchpad.net/ubuntu/+source/openssl/1.1.1f-1ubuntu2.19
https://launchpad.net/ubuntu/+source/openssl/1.1.1-1ubuntu2.1~18.04.23
https://launchpad.net/ubuntu/+source/openssl1.0/1.0.2n-1ubuntu5.13

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