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Ubuntu Security Notice USN-5688-1

Ubuntu Security Notice USN-5688-1
Posted Oct 19, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5688-1 - 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 or possibly execute arbitrary code.

tags | advisory, denial of service, overflow, arbitrary
systems | linux, ubuntu
advisories | CVE-2022-3515
SHA-256 | b0abcccfc86379627f6dd1f0513c2920b83e6c63b8b82c5298456cfc5ed67026

Ubuntu Security Notice USN-5688-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-5688-1
October 19, 2022

libksba vulnerability
==========================================================================

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

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

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.

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

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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