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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.4274 MFSA 2020-53 Security Vulnerabilities fixed in Thunderbird 78.5.1 2 December 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Thunderbird Publisher: Mozilla Operating System: Windows UNIX variants (UNIX, Linux, OSX) Impact/Access: Reduced Security -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2020-26970 Original Bulletin: https://www.mozilla.org/en-US/security/advisories/mfsa2020-53/ - --------------------------BEGIN INCLUDED TEXT-------------------- Mozilla Foundation Security Advisory 2020-53 Security Vulnerabilities fixed in Thunderbird 78.5.1 Announced December 1, 2020 Impact high Products Thunderbird Fixed in Thunderbird 78.5.1 # CVE-2020-26970: Stack overflow due to incorrect parsing of SMTP server response codes Reporter Chiaki Ishikawa Impact high Description When reading SMTP server status codes, Thunderbird writes an integer value to a position on the stack that is intended to contain just one byte. Depending on processor architecture and stack layout, this leads to stack corruption that may be exploitable. References o Bug 1677338 - --------------------------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. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. 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 iQIVAwUBX8c0TONLKJtyKPYoAQi04Q//TiZMxc2ypeJ9kcmeaH4EpGUGnBjP3PqH C/bDKYCfjqExG551K/oh178wSFavAppBu20n8iuhGqJsjZDyseXRpS4EhaYMEn7t wT2DUR6mH794HaYjQ1oKQWL1/8sT9ia6Wn40vkGS16Te5za/pRT+1wg3mxUgi+I8 IETyGqeiCSOgJZkLhRydJmIpUItow874kHrxaghabN02skX8JiFsyFyUsY7Eqzo/ ZlIYjdPkHJ41nvfNzus90XE1yCL15ODHMS7J2m27xDK4uiBxLgrvOKUdLam9A/z0 5xUJQoy4FAxk0yuvO8mmaWYlAQz9cv/lVw7Uy/9Q6B81o0CpUYxs0OG4asiMF6sb oYCPnYQ9iUATtrX7GD7bvdOqDuS+6H2q+WtKpQH4kmNV4ok3MvVMPy5/j3CanRx2 f+RvlEvdvUcWovMytjt88CNocOt9LzebXeUvaD4szsQ6ulyo59L7t1tHiSr4glE+ H5SIUV8Y0gu8UPX0AurCbHSC9H3s+8A2OZgxF9qiHCZEriaUb6pN2M7NuhebJ/cz MHVGS0x+6l51dZIUXOVEqwTYOJ2M0lN70Yl6api9qR+DKyzq7BvcBVfSWEy2vNgI GF192gLHvbjepkEKVN5yVB9lQbNNk5PB5h662/2+fAEHAprlqTJfL9k4QCRlWsG3 rHYx6/+RSXA= =hYh8 -----END PGP SIGNATURE-----