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Ubuntu Security Notice USN-6083-2

Ubuntu Security Notice 6083-2 - USN-6083-1 fixed a vulnerability in cups-filters. This update provides the corresponding update for Ubuntu 16.04 LTS. It was discovered that cups-filters incorrectly handled the beh CUPS backend. A remote attacker could possibly use this issue to cause the backend to stop responding or to execute arbitrary code.

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Ubuntu Security Notice USN-6083-2
June 19, 2023

cups-filters vulnerability

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

  • Ubuntu 16.04 LTS (Available with Ubuntu Pro)

Summary:

cups-filters could be made to crash or run programs if it received
specially crafted network traffic.

Software Description:

  • cups-filters: OpenPrinting CUPS Filters

Details:

USN-6083-1 fixed a vulnerability in cups-filters. This update provides
the corresponding update for Ubuntu 16.04 LTS.

Original advisory details:

It was discovered that cups-filters incorrectly handled the beh CUPS
backend. A remote attacker could possibly use this issue to cause the
backend to stop responding or to execute arbitrary code.

Update instructions:

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

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
cups-filters 1.8.3-2ubuntu3.5+esm1

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

References:
https://ubuntu.com/security/notices/USN-6083-2
https://ubuntu.com/security/notices/USN-6083-1
CVE-2023-24805

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Red Hat Security Advisory 2023-3428-01

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Red Hat Security Advisory 2023-3425-01

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Red Hat Security Advisory 2023-3426-01

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Red Hat Security Advisory 2023-3423-01 - The cups-filters package contains back ends, filters, and other software that was once part of the core Common UNIX Printing System distribution but is now maintained independently. Issues addressed include a code execution vulnerability.

RHSA-2023:3429: Red Hat Security Advisory: cups-filters security update

An update for cups-filters is now available for Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-24805: A vulnerability was found in cups-filters. This security flaw occurs if you use beh to create an accessible network printer, possibly resulting in remote code execution.

RHSA-2023:3428: Red Hat Security Advisory: cups-filters security update

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RHSA-2023:3427: Red Hat Security Advisory: cups-filters security update

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RHSA-2023:3424: Red Hat Security Advisory: cups-filters security update

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CVE-2023-24805: report a command inject Vulnerabilities in cups-filters

cups-filters contains backends, filters, and other software required to get the cups printing service working on operating systems other than macos. If you use the Backend Error Handler (beh) to create an accessible network printer, this security vulnerability can cause remote code execution. `beh.c` contains the line `retval = system(cmdline) >> 8;` which calls the `system` command with the operand `cmdline`. `cmdline` contains multiple user controlled, unsanitized values. As a result an attacker with network access to the hosted print server can exploit this vulnerability to inject system commands which are executed in the context of the running server. This issue has been addressed in commit `8f2740357` and is expected to be bundled in the next release. Users are advised to upgrade when possible and to restrict access to network printers in the meantime.

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