==========================================================================
Ubuntu Security Notice USN-5840-1
February 02, 2023

lrzip vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM

Summary:

Several security issues were fixed in Long Range ZIP.

Software Description:
- lrzip: compression program with a very high compression ratio

Details:

It was discovered that Long Range ZIP incorrectly handled pointers. If
a user or an automated system were tricked into opening a certain
specially crafted ZIP file, an attacker could possibly use this issue
to cause a denial of service. This issue only affected Ubuntu 14.04 ESM,
Ubuntu 16.04 ESM, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2020-25467)

It was discovered that Long Range ZIP incorrectly handled pointers. If
a user or an automated system were tricked into opening a certain
specially crafted ZIP file, an attacker could possibly use this issue
to cause a denial of service. This issue only affected Ubuntu 18.04 LTS
and Ubuntu 20.04 LTS. (CVE-2021-27345, CVE-2021-27347)

It was discovered that Long Range ZIP incorrectly handled pointers. If
a user or an automated system were tricked into opening a certain
specially crafted ZIP file, an attacker could possibly use this issue
to cause a denial of service. This issue only affected Ubuntu 16.04 ESM,
Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2022-26291)

It was discovered that Long Range ZIP incorrectly handled memory allocation,
which could lead to a heap memory corruption. An attacker could possibly use
this issue to cause denial of service. This issue affected Ubuntu 14.04 ESM,
Ubuntu 16.04 ESM, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and
Ubuntu 22.10. (CVE-2022-28044)

Update instructions:

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

Ubuntu 22.10:
   lrzip                           0.651-2ubuntu0.22.10.1

Ubuntu 22.04 LTS:
   lrzip                           0.651-2ubuntu0.22.04.1

Ubuntu 20.04 LTS:
   lrzip 0.631+git180528-1+deb10u1build0.20.04.1

Ubuntu 18.04 LTS:
   lrzip                           0.631-1+deb9u3build0.18.04.1

Ubuntu 16.04 ESM:
   lrzip                           0.621-1ubuntu0.1~esm2

Ubuntu 14.04 ESM:
   lrzip                           0.616-1ubuntu0.1~esm2

In general, a standard system update will make all the necessary changes.

References:
   https://ubuntu.com/security/notices/USN-5840-1
   CVE-2018-5786, CVE-2020-25467, CVE-2021-27345, CVE-2021-27347,
   CVE-2022-26291, CVE-2022-28044

Package Information:
https://launchpad.net/ubuntu/+source/lrzip/0.651-2ubuntu0.22.10.1
https://launchpad.net/ubuntu/+source/lrzip/0.651-2ubuntu0.22.04.1
https://launchpad.net/ubuntu/+source/lrzip/0.631+git180528-1+deb10u1build0.20.04.1
https://launchpad.net/ubuntu/+source/lrzip/0.631-1+deb9u3build0.18.04.1