USN-4745-1: OpenSSL vulnerabilities

23 February 2021

Several security issues were fixed in OpenSSL.

Releases

Packages

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

Details

David Benjamin discovered that OpenSSL incorrectly handled comparing
certificates containing a EDIPartyName name type. A remote attacker could
possibly use this issue to cause OpenSSL to crash, resulting in a denial of
service. (CVE-2020-1971)

Tavis Ormandy discovered that OpenSSL incorrectly handled parsing issuer
fields. A remote attacker could possibly use this issue to cause OpenSSL to
crash, resulting in a denial of service. (CVE-2021-23841)

Update instructions

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

Ubuntu 14.04
Ubuntu 12.04

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

Related notices

  • USN-4662-1: libcrypto1.1-udeb, libssl-dev, libcrypto1.0.0-udeb, libssl1.0.0, libssl1.0.0-udeb, libssl1.1-udeb, libssl1.0-dev, openssl1.0, libssl-doc, openssl, libssl1.1
  • USN-4738-1: libcrypto1.1-udeb, libssl-dev, libcrypto1.0.0-udeb, libssl1.0.0, libssl1.0.0-udeb, libssl1.1-udeb, libssl1.0-dev, openssl1.0, libssl-doc, openssl, libssl1.1