Ubuntu 5787-1: Libksba vulnerability | LinuxSecurity.com
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Ubuntu Security Notice USN-5787-1
January 05, 2023

libksba vulnerability
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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

Summary:

Libksba could be made to crash or run programs if it processed specially
crafted data.

Software Description:
- libksba: X.509 and CMS support library

Details:

It was discovered that Libksba incorrectly handled parsing CRL signatures.
A remote attacker could use this issue to cause Libksba to crash, resulting
in a denial of service, or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 22.10:
   libksba8                        1.6.0-3ubuntu1.1

Ubuntu 22.04 LTS:
   libksba8                        1.6.0-2ubuntu0.2

Ubuntu 20.04 LTS:
   libksba8                        1.3.5-2ubuntu0.20.04.2

Ubuntu 18.04 LTS:
   libksba8                        1.3.5-2ubuntu0.18.04.2

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

References:
   https://ubuntu.com/security/notices/USN-5787-1
   CVE-2022-47629

Package Information:
   https://launchpad.net/ubuntu/+source/libksba/1.6.0-3ubuntu1.1
   https://launchpad.net/ubuntu/+source/libksba/1.6.0-2ubuntu0.2
   https://launchpad.net/ubuntu/+source/libksba/1.3.5-2ubuntu0.20.04.2
   https://launchpad.net/ubuntu/+source/libksba/1.3.5-2ubuntu0.18.04.2

Ubuntu 5787-1: Libksba vulnerability

January 5, 2023
Libksba could be made to crash or run programs if it processed specially crafted data.

Summary

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 Summary: Libksba could be made to crash or run programs if it processed specially crafted data. Software Description: - libksba: X.509 and CMS support library Details: It was discovered that Libksba incorrectly handled parsing CRL signatures. A remote attacker could use this issue to cause Libksba to crash, resulting in a denial of service, or possibly execute arbitrary code.

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 22.10: libksba8 1.6.0-3ubuntu1.1 Ubuntu 22.04 LTS: libksba8 1.6.0-2ubuntu0.2 Ubuntu 20.04 LTS: libksba8 1.3.5-2ubuntu0.20.04.2 Ubuntu 18.04 LTS: libksba8 1.3.5-2ubuntu0.18.04.2 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-5787-1

CVE-2022-47629

Severity
Ubuntu Security Notice USN-5787-1

Package Information

https://launchpad.net/ubuntu/+source/libksba/1.6.0-3ubuntu1.1 https://launchpad.net/ubuntu/+source/libksba/1.6.0-2ubuntu0.2 https://launchpad.net/ubuntu/+source/libksba/1.3.5-2ubuntu0.20.04.2 https://launchpad.net/ubuntu/+source/libksba/1.3.5-2ubuntu0.18.04.2

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