Advisory Published

USN-5051-1: OpenSSL vulnerabilities

First published: Tue Aug 24 2021(Updated: )

John Ouyang discovered that OpenSSL incorrectly handled decrypting SM2 data. A remote attacker could use this issue to cause applications using OpenSSL to crash, resulting in a denial of service, or possibly change application behaviour. (CVE-2021-3711) Ingo Schwarze discovered that OpenSSL incorrectly handled certain ASN.1 strings. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service, or possibly obtain sensitive information. (CVE-2021-3712)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/libssl1.1<1.1.1j-1ubuntu3.5
1.1.1j-1ubuntu3.5
Ubuntu Ubuntu=21.04
All of
ubuntu/libssl1.1<1.1.1f-1ubuntu2.8
1.1.1f-1ubuntu2.8
Ubuntu Ubuntu=20.04
All of
ubuntu/libssl1.1<1.1.1-1ubuntu2.1~18.04.13
1.1.1-1ubuntu2.1~18.04.13
Ubuntu Ubuntu=18.04

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