Advisory Published

USN-6015-1: Thunderbird vulnerabilities

First published: Thu Apr 13 2023(Updated: )

Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, bypass security restrictions, cross-site tracing, or execute arbitrary code. (CVE-2023-1945, CVE-2023-29548, CVE-2023-29550) Paul Menzel discovered that Thunderbird did not properly validate OCSP revocation status of recipient certificates when sending S/Mime encrypted email. An attacker could potentially exploits this issue to perform spoofing attack. (CVE-2023-0547) Ribose RNP Team discovered that Thunderbird did not properly manage memory when parsing certain OpenPGP messages. An attacker could potentially exploits this issue to cause a denial of service. (CVE-2023-29479) Irvan Kurniawan discovered that Thunderbird 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 Thunderbird 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 Thunderbird 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) Trung Pham discovered that Thunderbird 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 Thunderbird 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/thunderbird<1:102.10.0+build2-0ubuntu0.22.10.1
1:102.10.0+build2-0ubuntu0.22.10.1
Ubuntu Ubuntu=22.10
All of
ubuntu/thunderbird<1:102.10.0+build2-0ubuntu0.22.04.1
1:102.10.0+build2-0ubuntu0.22.04.1
Ubuntu Ubuntu=22.04
All of
ubuntu/thunderbird<1:102.10.0+build2-0ubuntu0.20.04.1
1:102.10.0+build2-0ubuntu0.20.04.1
Ubuntu Ubuntu=20.04
All of
ubuntu/thunderbird<1:102.10.0+build2-0ubuntu0.18.04.1
1:102.10.0+build2-0ubuntu0.18.04.1
Ubuntu Ubuntu=18.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-6015-1 vulnerability?

    The severity of USN-6015-1 vulnerability is not specified in the provided information.

  • How can an attacker exploit the USN-6015-1 vulnerability?

    An attacker can potentially exploit the USN-6015-1 vulnerability to cause a denial of service, obtain sensitive information, bypass security restrictions, and perform cross-site tracing.

  • Which software is affected by the USN-6015-1 vulnerability?

    The Thunderbird software is affected by the USN-6015-1 vulnerability.

  • Which versions of Thunderbird are affected by the USN-6015-1 vulnerability?

    The versions 1:102.10.0+build2-0ubuntu0.22.10.1, 1:102.10.0+build2-0ubuntu0.22.04.1, 1:102.10.0+build2-0ubuntu0.20.04.1, and 1:102.10.0+build2-0ubuntu0.18.04.1 of Thunderbird are affected by the USN-6015-1 vulnerability.

  • How can I fix the USN-6015-1 vulnerability?

    To fix the USN-6015-1 vulnerability, you should update Thunderbird to the recommended version.

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