[MFSA-2023-47] Security Vulnerabilities fixed in Thunderbird 115.4.1

Severity High
Affected Packages 1
Fixed Packages 1
CVEs 8

In general, these flaws cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts.

  • CVE-2023-5721: Queued up rendering could have allowed websites to clickjack (high)
    It was possible for certain browser prompts and dialogs to be activated or dismissed unintentionally by the user due to an insufficient activation-delay.

  • CVE-2023-5724: Large WebGL draw could have led to a crash (moderate)
    Drivers are not always robust to extremely large draw calls and in some cases this scenario could have led to a crash.

  • CVE-2023-5725: WebExtensions could open arbitrary URLs (moderate)
    A malicious installed WebExtension could open arbitrary URLs, which under the right circumstance could be leveraged to collect sensitive user data.

  • CVE-2023-5726: Full screen notification obscured by file open dialog on macOS (moderate)
    A website could have obscured the full screen notification by using the file open dialog. This could have led to user confusion and possible spoofing attacks.
    Note: This issue only affected macOS operating systems. Other operating systems are unaffected.

  • CVE-2023-5727: Download Protections were bypassed by .msix, .msixbundle, .appx, and .appxbundle files on Windows (moderate)
    The executable file warning was not presented when downloading .msix, .msixbundle, .appx, and .appxbundle files, which can run commands on a user's computer.

    Note: This issue only affected Windows operating systems. Other operating systems are unaffected.

  • CVE-2023-5728: Improper object tracking during GC in the JavaScript engine could have led to a crash. (moderate)
    During garbage collection extra operations were performed on a object that should not be. This could have led to a potentially exploitable crash.

  • CVE-2023-5730: Memory safety bugs fixed in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4.1 (high)
    Memory safety bugs present in Firefox 118, Firefox ESR 115.3, and Thunderbird 115.3. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.

  • CVE-2023-5732: Address bar spoofing via bidirectional characters (moderate)
    An attacker could have created a malicious link using bidirectional characters to spoof the location in the address bar when visited.

Package Affected Version
pkg:mozilla/Thunderbird < 115.4.1
Package Fixed Version
pkg:mozilla/Thunderbird = 115.4.1
Source # ID Name URL
Bugzilla 1830820 https://bugzilla.mozilla.org/show_bug.cgi?id=1830820
Bugzilla 1836705 https://bugzilla.mozilla.org/show_bug.cgi?id=1836705
Bugzilla 1845739 https://bugzilla.mozilla.org/show_bug.cgi?id=1845739
Bugzilla 1846205 https://bugzilla.mozilla.org/show_bug.cgi?id=1846205
Bugzilla 1847180 https://bugzilla.mozilla.org/show_bug.cgi?id=1847180
Bugzilla 1852729 https://bugzilla.mozilla.org/show_bug.cgi?id=1852729
Bugzilla 1836607 Memory safety bugs fixed in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4.1 https://bugzilla.mozilla.org/show_bug.cgi?id=1836607
Bugzilla 1840918 Memory safety bugs fixed in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4.1 https://bugzilla.mozilla.org/show_bug.cgi?id=1840918
Bugzilla 1848694 Memory safety bugs fixed in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4.1 https://bugzilla.mozilla.org/show_bug.cgi?id=1848694
Bugzilla 1848833 Memory safety bugs fixed in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4.1 https://bugzilla.mozilla.org/show_bug.cgi?id=1848833
Bugzilla 1850191 Memory safety bugs fixed in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4.1 https://bugzilla.mozilla.org/show_bug.cgi?id=1850191
Bugzilla 1850259 Memory safety bugs fixed in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4.1 https://bugzilla.mozilla.org/show_bug.cgi?id=1850259
Bugzilla 1852596 Memory safety bugs fixed in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4.1 https://bugzilla.mozilla.org/show_bug.cgi?id=1852596
Bugzilla 1853201 Memory safety bugs fixed in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4.1 https://bugzilla.mozilla.org/show_bug.cgi?id=1853201
Bugzilla 1854002 Memory safety bugs fixed in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4.1 https://bugzilla.mozilla.org/show_bug.cgi?id=1854002
Bugzilla 1855306 Memory safety bugs fixed in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4.1 https://bugzilla.mozilla.org/show_bug.cgi?id=1855306
Bugzilla 1855640 Memory safety bugs fixed in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4.1 https://bugzilla.mozilla.org/show_bug.cgi?id=1855640
Bugzilla 1856695 Memory safety bugs fixed in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4.1 https://bugzilla.mozilla.org/show_bug.cgi?id=1856695
Bugzilla 1690979 https://bugzilla.mozilla.org/show_bug.cgi?id=1690979
Bugzilla 1836962 https://bugzilla.mozilla.org/show_bug.cgi?id=1836962
Type Package URL Namespace Name / Product Version Distribution / Platform Arch Patch / Fix
Affected pkg:mozilla/Thunderbird Thunderbird < 115.4.1
Fixed pkg:mozilla/Thunderbird Thunderbird = 115.4.1
# CVE Description CVSS EPSS EPSS Trend (30 days) Affected Products Weaknesses Security Advisories Exploits PoC Pubblication Date Modification Date
# CVE Description CVSS EPSS EPSS Trend (30 days) Affected Products Weaknesses Security Advisories PoC Pubblication Date Modification Date
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