Advisory Published

USN-6010-1: Firefox vulnerabilities

First published: Wed Apr 12 2023(Updated: )

Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information across domains, or execute arbitrary code. (CVE-2023-29537, CVE-2023-29540, CVE-2023-29543, CVE-2023-29544, CVE-2023-29547, CVE-2023-29548, CVE-2023-29549, CVE-2023-29550, CVE-2023-29551) Irvan Kurniawan discovered that Firefox did not properly manage fullscreen notifications using a combination of window.open, fullscreen requests, window.name assignments, and setInterval calls. An attacker could potentially exploit this issue to perform spoofing attacks. (CVE-2023-29533) Lukas Bernhard discovered that Firefox did not properly manage memory when doing Garbage Collector compaction. An attacker could potentially exploits this issue to cause a denial of service. (CVE-2023-29535) Zx from qriousec discovered that Firefox did not properly validate the address to free a pointer provided to the memory manager. An attacker could potentially exploits this issue to cause a denial of service. (CVE-2023-29536) Alexis aka zoracon discovered that Firefox did not properly validate the URI received by the WebExtension during a load request. An attacker could potentially exploits this to obtain sensitive information. (CVE-2023-29538) Trung Pham discovered that Firefox did not properly validate the filename directive in the Content-Disposition header. An attacker could possibly exploit this to perform reflected file download attacks potentially tricking users to install malware. (CVE-2023-29539) Ameen Basha M K discovered that Firefox did not properly validate downloads of files ending in .desktop. An attacker could potentially exploits this issue to execute arbitrary code. (CVE-2023-29541)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/firefox<112.0+build2-0ubuntu0.20.04.1
112.0+build2-0ubuntu0.20.04.1
Ubuntu Ubuntu=20.04
All of
ubuntu/firefox<112.0+build2-0ubuntu0.18.04.1
112.0+build2-0ubuntu0.18.04.1
Ubuntu Ubuntu=18.04

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Frequently Asked Questions

  • What are the vulnerabilities addressed in USN-6010-1?

    The vulnerabilities addressed in USN-6010-1 are CVE-2023-29537, CVE-2023-29540, CVE-2023-29543, and CVE-2023-29549.

  • What is the severity of the vulnerabilities in USN-6010-1?

    The severity of the vulnerabilities in USN-6010-1 varies from denial of service to arbitrary code execution.

  • How can the vulnerabilities in USN-6010-1 be exploited?

    The vulnerabilities in USN-6010-1 can be exploited by tricking a user into opening a specially crafted website.

  • How do I fix the vulnerabilities in USN-6010-1?

    To fix the vulnerabilities in USN-6010-1, update Firefox to version 112.0+build2-0ubuntu0.20.04.1 for Ubuntu 20.04, or version 112.0+build2-0ubuntu0.18.04.1 for Ubuntu 18.04.

  • Where can I find more information about the vulnerabilities addressed in USN-6010-1?

    You can find more information about the vulnerabilities addressed in USN-6010-1 on the Ubuntu Security Notices website. [CVE-2023-29540](https://ubuntu.com/security/CVE-2023-29540), [CVE-2023-29543](https://ubuntu.com/security/CVE-2023-29543), [CVE-2023-29549](https://ubuntu.com/security/CVE-2023-29549)

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