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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.0617 MFSA 2022-06 Security Vulnerabilities fixed in Thunderbird 91.6 14 February 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Thunderbird Publisher: Mozilla Operating System: Windows UNIX variants (UNIX, Linux, OSX) Resolution: Patch/Upgrade CVE Names: CVE-2022-22764 CVE-2022-22763 CVE-2022-22761 CVE-2022-22760 CVE-2022-22759 CVE-2022-22756 CVE-2022-22754 CVE-2022-22753 Reference: ESB-2022.0575 ESB-2022.0574 ESB-2022.0567 ESB-2022.0566 Original Bulletin: https://www.mozilla.org/en-US/security/advisories/mfsa2022-06/ Comment: CVSS (Max): 7.5 CVE-2022-22754 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H) CVSS Source: Red Hat - --------------------------BEGIN INCLUDED TEXT-------------------- Mozilla Foundation Security Advisory 2022-06 Security Vulnerabilities fixed in Thunderbird 91.6 Announced: February 8, 2022 Impact: high Products: Thunderbird Fixed in: Thunderbird 91.6 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-2022-22753: Privilege Escalation to SYSTEM on Windows via Maintenance Service Reporter: Seb Patane Impact: high Description A Time-of-Check Time-of-Use bug existed in the Maintenance (Updater) Service that could be abused to grant Users write access to an arbitrary directory. This could have been used to escalate to SYSTEM access. This bug only affects Thunderbird on Windows. Other operating systems are unaffected. References o Bug 1732435 # CVE-2022-22754: Extensions could have bypassed permission confirmation during update Reporter: Rob Wu Impact: high Description If a user installed an extension of a particular type, the extension could have auto-updated itself and while doing so, bypass the prompt which grants the new version the new requested permissions. References o Bug 1750565 # CVE-2022-22756: Drag and dropping an image could have resulted in the dropped object being an executable Reporter: Abdulrahman Alqabandi Impact: moderate Description If a user was convinced to drag and drop an image to their desktop or other folder, the resulting object could have been changed into an executable script which would have run arbitrary code after the user clicked on it. References o Bug 1317873 # CVE-2022-22759: Sandboxed iframes could have executed script if the parent appended elements Reporter: Johan Carlsson Impact: moderate Description If a document created a sandboxed iframe without allow-scripts, and subsequently appended an element to the iframe's document that e.g. had a JavaScript event handler - the event handler would have run despite the iframe's sandbox. References o Bug 1739957 # CVE-2022-22760: Cross-Origin responses could be distinguished between script and non-script content-types Reporter: Luan Herrera Impact: moderate Description When importing resources using Web Workers, error messages would distinguish the difference between application/javascript responses and non-script responses. This could have been abused to learn information cross-origin. References o Bug 1740985 o Bug 1748503 # CVE-2022-22761: frame-ancestors Content Security Policy directive was not enforced for framed extension pages Reporter: Mart Gil Robles (Mart at FlowCrypt) Impact: moderate Description Web-accessible extension pages (pages with a moz-extension:// scheme) were not correctly enforcing the frame-ancestors directive when it was used in the Web Extension's Content Security Policy. References o Bug 1745566 # CVE-2022-22763: Script Execution during invalid object state Reporter: Mozilla Fuzzing Team Impact: moderate Description When a worker is shutdown, it was possible to cause script to run late in the lifecycle, at a point after where it should not be possible. References o Bug 1740534 # CVE-2022-22764: Memory safety bugs fixed in Thunderbird 91.6 Reporter: Mozilla developers and community Impact: high Description Mozilla developers and community members Paul Adenot and the Mozilla Fuzzing Team reported memory safety bugs present in Thunderbird 91.5. 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. References o Memory safety bugs fixed in Thunderbird 91.6 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. 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If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBYgmgpeNLKJtyKPYoAQh8YQ/+JKclaBEEtRp73dvxNvzhpGpmiKDuH5Ug pAoVgTRiFuDe9NE2b5mTDuHuMjkt0AkY1IeAJzwqEfGdGM18MhrXIQrWjp5Y1fVt /r/mSZHHs/va/FV07Z1l0Fl0DbKb1KPI42N4gXY1xUngV7q1Kcs1DrX+ZUMN33Qp Snv28KCtX7rqK56ac5WHYrCe9t1T+ioELfpcDMeq35Ap6HkQgCTeQAEmTCDHVM4s H0wRG4Ez/CgnLo0Is19dwJXctvB3JS3dqMpEbYorVCocH9nw9J+MIEmeZAtvMR4f l2zeafoCFTXoDwWtOSxkQV6Q+UTeJxWWpo2dxF7DlU8JGAkBvu6iEIusLanZdF2s e4KYQY0uRnJRjuvMXnYdpdnCVXJKLgDvDYg1VhqhvvfmhK3WAZHRxvaSv0TWY8tP lBbnk6nzrTiIoYgf9lWqxsxpcR0YxaB8M54/m18VqkRFnuvTnNR5pZHib1yDe6Go duL5RI0Qk9ERHr33ntFJNYSL+tMIR0WMLeO57sUEY4WVksp80UApGUlTtQvlCax0 DtlfY7nVx3HmhoO3M5ylSyn7Vqx1ypJOAcXxBSRFbaj2unvsvXScmfdfDZT8lRyn pw6KFgCXRhB7GxJ0uaN+nkT2V85vYvn9U5h/8Jiyew6DZdPKuVQUBW990j/8QjOR qbkAc5imOLs= =0dxR -----END PGP SIGNATURE-----