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List: ubuntu-security-announce
Subject: [USN-6035-1] KAuth vulnerability
From: Paulo Flabiano Smorigo <pfsmorigo () canonical ! com>
Date: 2023-04-20 18:30:15
Message-ID: 20230420183015.psmwqubuiryqfvhw () morty
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==========================================================================
Ubuntu Security Notice USN-6035-1
April 20, 2023
kauth vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 ESM
- Ubuntu 16.04 ESM
Summary:
KAuth could be made to crash or run programs if it received specially crafted
input.
Software Description:
- kauth: Abstraction to system policy and authentication features
Details:
It was discovered that KAuth incorrectly handled some configuration parameters
with specially crafted arbitrary types. An attacker could possibly use this
issue to cause 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 18.04 ESM:
libkf5auth-data 5.44.0-0ubuntu1+esm1
libkf5auth5 5.44.0-0ubuntu1+esm1
Ubuntu 16.04 ESM:
libkf5auth-data 5.18.0-0ubuntu2+esm1
libkf5auth5 5.18.0-0ubuntu2+esm1
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6035-1
CVE-2019-7443
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