Advisory Published

USN-6709-1: OpenSSL vulnerabilities

First published: Thu Mar 21 2024(Updated: )

It was discovered that checking excessively long DH keys or parameters may be very slow. A remote attacker could possibly use this issue to cause OpenSSL to consume resources, resulting in a denial of service. (CVE-2023-3446) After the fix for CVE-2023-3446 Bernd Edlinger discovered that a large q parameter value can also trigger an overly long computation during some of these checks. A remote attacker could possibly use this issue to cause OpenSSL to consume resources, resulting in a denial of service. (CVE-2023-3817) David Benjamin discovered that generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow. A remote attacker could possibly use this issue to cause OpenSSL to consume resources, resulting in a denial of service. (CVE-2023-5678) Bahaa Naamneh discovered that processing a maliciously formatted PKCS12 file may lead OpenSSL to crash leading to a potential Denial of Service attack. (CVE-2024-0727)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/libssl1.0.0<1.0.2n-1ubuntu5.13+esm1
1.0.2n-1ubuntu5.13+esm1
Ubuntu Ubuntu=18.04

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