Advisory Published

USN-5943-1: Thunderbird vulnerabilities

First published: Mon Mar 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-2023-0616, CVE-2023-25735, CVE-2023-25737, CVE-2023-25739, CVE-2023-25729, CVE-2023-25742, CVE-2023-25746) Johan Carlsson discovered that Thunderbird did not properly implement CSP policy on a header when using iframes. An attacker could potentially exploits this to exfiltrate data. (CVE-2023-25728) Irvan Kurniawan discovered that Thunderbird was not properly handling background fullscreen scripts when the window goes into fullscreen mode. An attacker could possibly use this issue to spoof the user and obtain sensitive information. (CVE-2023-25730) Christian Holler discovered that Thunderbird did not properly check the Safe Bag attributes in PKCS 12 certificate bundle. An attacker could possibly use this issue to write to arbitrary memory by sending malicious PKCS 12 certificate. (CVE-2023-0767) Ronald Crane discovered that Thunderbird did not properly check the size of the input being encoded in xpcom. An attacker could possibly use this issue to perform out of bound memory write operations. (CVE-2023-25732)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/thunderbird<1:102.8.0+build2-0ubuntu0.22.10.1
1:102.8.0+build2-0ubuntu0.22.10.1
Ubuntu Ubuntu=22.10
All of
ubuntu/thunderbird<1:102.8.0+build2-0ubuntu0.22.04.1
1:102.8.0+build2-0ubuntu0.22.04.1
Ubuntu Ubuntu=22.04
All of
ubuntu/thunderbird<1:102.8.0+build2-0ubuntu0.20.04.1
1:102.8.0+build2-0ubuntu0.20.04.1
Ubuntu Ubuntu=20.04
All of
ubuntu/thunderbird<1:102.8.0+build2-0ubuntu0.18.04.1
1:102.8.0+build2-0ubuntu0.18.04.1
Ubuntu Ubuntu=18.04

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-5943-1?

    The severity of USN-5943-1 is not specified in the provided information.

  • How do I fix USN-5943-1?

    To fix USN-5943-1, update Thunderbird to version 1:102.8.0+build2-0ubuntu0.22.10.1 if you are using Ubuntu 22.10, 1:102.8.0+build2-0ubuntu0.22.04.1 if you are using Ubuntu 22.04, 1:102.8.0+build2-0ubuntu0.20.04.1 if you are using Ubuntu 20.04, or 1:102.8.0+build2-0ubuntu0.18.04.1 if you are using Ubuntu 18.04.

  • What software versions are affected by USN-5943-1?

    The affected software is Thunderbird on Ubuntu 22.10, 22.04, 20.04, and 18.04.

  • What are the security issues addressed in USN-5943-1?

    The security issues addressed in USN-5943-1 include denial of service, sensitive information disclosure, security restriction bypass, and cross-site tracing.

  • Where can I find more information about USN-5943-1?

    You can find more information about USN-5943-1 at the following references: [CVE-2023-25737](https://ubuntu.com/security/CVE-2023-25737), [CVE-2023-25729](https://ubuntu.com/security/CVE-2023-25729), [CVE-2023-0767](https://ubuntu.com/security/CVE-2023-0767).

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