Advisory Published

USN-5844-1: OpenSSL vulnerabilities

First published: Tue Feb 07 2023(Updated: )

David Benjamin discovered that OpenSSL incorrectly handled X.400 address processing. A remote attacker could possibly use this issue to read arbitrary memory contents or cause OpenSSL to crash, resulting in a denial of service. (CVE-2023-0286) Corey Bonnell discovered that OpenSSL incorrectly handled X.509 certificate verification. A remote 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 and Ubuntu 22.10. (CVE-2022-4203) Hubert Kario discovered that OpenSSL had a timing based side channel in the OpenSSL RSA Decryption implementation. A remote attacker could possibly use this issue to recover sensitive information. (CVE-2022-4304) Dawei Wang discovered that OpenSSL incorrectly handled parsing certain PEM data. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2022-4450) Octavio Galland and Marcel Böhme discovered that OpenSSL incorrectly handled streaming ASN.1 data. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2023-0215) Marc Schönefeld discovered that OpenSSL incorrectly handled malformed PKCS7 data. A remote 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 and Ubuntu 22.10. (CVE-2023-0216) Kurt Roeckx discovered that OpenSSL incorrectly handled validating certain DSA public keys. A remote 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 and Ubuntu 22.10. (CVE-2023-0217) Hubert Kario and Dmitry Belyavsky discovered that OpenSSL incorrectly validated certain signatures. A remote 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 and Ubuntu 22.10. (CVE-2023-0401)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/libssl3<3.0.5-2ubuntu2.1
3.0.5-2ubuntu2.1
Ubuntu=22.10
All of
ubuntu/libssl3<3.0.2-0ubuntu1.8
3.0.2-0ubuntu1.8
Ubuntu=22.04
All of
ubuntu/libssl1.1<1.1.1f-1ubuntu2.17
1.1.1f-1ubuntu2.17
Ubuntu=20.04
All of
ubuntu/libssl1.1<1.1.1-1ubuntu2.1~18.04.21
1.1.1-1ubuntu2.1~18.04.21
Ubuntu=18.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-5844-1?

    The severity of USN-5844-1 is considered high due to potential remote code execution and denial of service risks.

  • How do I fix USN-5844-1?

    To fix USN-5844-1, upgrade to the fixed versions of libssl3 or libssl1.1 as specified in the advisory.

  • What are the affected versions in USN-5844-1?

    Affected versions in USN-5844-1 include libssl3 for Ubuntu 22.10 and 22.04, and libssl1.1 for Ubuntu 20.04 and 18.04.

  • Who discovered the vulnerabilities in USN-5844-1?

    David Benjamin and Corey Bonnell discovered the vulnerabilities addressed in USN-5844-1.

  • What types of attacks are possible due to USN-5844-1?

    USN-5844-1 may allow remote attackers to read arbitrary memory contents or cause OpenSSL to crash.

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