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Ubuntu 22.04 LTS USN-5688-1 Urgent: Libksba Integer Overflow Affects Apps

ubuntu
Calendar Grey October 19, 2022
Dist Ubuntu Esm H88
Uncover essential details about the latest Ubuntu libksba security advisory, which highlights significant risks of application failures.
Libksba could be made to crash or run programs if it decoded specially crafted data.

Summary

Libksba could be made to crash or run programs if it decoded specially

crafted data.

Software Description:

- libksba: X.509 and CMS support library

Details:

It was discovered that an integer overflow could be triggered in Libksba

when decoding certain data. An attacker could use this issue to cause a

denial of service (application crash) or possibly execute arbitrary code.

Topics%20covered

Topics Covered

security advisory denial of service critical update integer overflow application crash ubuntu libksba

Update Instructions

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

Ubuntu 22.04 LTS:
  libksba8                        1.6.0-2ubuntu0.1

Ubuntu 20.04 LTS:
  libksba8                        1.3.5-2ubuntu0.20.04.1

Ubuntu 18.04 LTS:
  libksba8                        1.3.5-2ubuntu0.18.04.1

Ubuntu 16.04 ESM:
  libksba8                        1.3.3-1ubuntu0.16.04.1+esm1

Ubuntu 14.04 ESM:
  libksba8                        1.3.0-3ubuntu0.14.04.2+esm1

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

References

https://ubuntu.com/security/notices/USN-5688-1

CVE-2022-3515

Severity
critical
Lowest
Low
Medium
High
Critical

October 19, 2022

Topics%20covered

Topics Covered

security advisory denial of service critical update integer overflow application crash ubuntu libksba

Package Information

https://launchpad.net/ubuntu/+source/libksba/1.6.0-2ubuntu0.1
https://launchpad.net/ubuntu/+source/libksba/1.3.5-2ubuntu0.20.04.1
https://launchpad.net/ubuntu/+source/libksba/1.3.5-2ubuntu0.18.04.1

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