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USN-5038-1: PostgreSQL vulnerabilities

12 August 2021

Several security issues were fixed in PostgreSQL.

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Releases

Packages

Details

It was discovered that the PostgresQL planner could create incorrect plans
in certain circumstances. A remote attacker could use this issue to cause
PostgreSQL to crash, resulting in a denial of service, or possibly obtain
sensitive information from memory. This issue only affected Ubuntu 20.04
LTS and Ubuntu 21.04. (CVE-2021-3677)

It was discovered that PostgreSQL incorrectly handled certain SSL
renegotiation ClientHello messages from clients. A remote attacker could
possibly use this issue to cause PostgreSQL to crash, resulting in a denial
of service. (CVE-2021-3449)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 21.04
Ubuntu 20.04
Ubuntu 18.04

This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart PostgreSQL to
make all the necessary changes.

Related notices

  • USN-4891-1: libcrypto1.1-udeb, libssl-doc, libssl1.1-udeb, libssl-dev, openssl, libssl1.1