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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.4099 thunderbird security update 19 November 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: thunderbird Publisher: Red Hat Operating System: Red Hat Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Denial of Service -- Remote with User Interaction Reduced Security -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2020-26950 Reference: ESB-2020.4079 ESB-2020.4055 ESB-2020.4039 ESB-2020.4038 ESB-2020.4024 Original Bulletin: https://access.redhat.com/errata/RHSA-2020:5146 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: thunderbird security update Advisory ID: RHSA-2020:5146-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2020:5146 Issue date: 2020-11-18 CVE Names: CVE-2020-26950 ===================================================================== 1. Summary: An update for thunderbird is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, x86_64 3. Description: Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 78.4.3. Security Fix(es): * Mozilla: Write side effects in MCallGetProperty opcode not accounted for (CVE-2020-26950) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect. 5. Bugs fixed (https://bugzilla.redhat.com/): 1896306 - CVE-2020-26950 Mozilla: Write side effects in MCallGetProperty opcode not accounted for 6. Package List: Red Hat Enterprise Linux AppStream (v. 8): Source: thunderbird-78.4.3-1.el8_3.src.rpm aarch64: thunderbird-78.4.3-1.el8_3.aarch64.rpm thunderbird-debuginfo-78.4.3-1.el8_3.aarch64.rpm thunderbird-debugsource-78.4.3-1.el8_3.aarch64.rpm ppc64le: thunderbird-78.4.3-1.el8_3.ppc64le.rpm thunderbird-debuginfo-78.4.3-1.el8_3.ppc64le.rpm thunderbird-debugsource-78.4.3-1.el8_3.ppc64le.rpm x86_64: thunderbird-78.4.3-1.el8_3.x86_64.rpm thunderbird-debuginfo-78.4.3-1.el8_3.x86_64.rpm thunderbird-debugsource-78.4.3-1.el8_3.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2020-26950 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2020 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBX7Ur/9zjgjWX9erEAQgAEA//REnUwcey9ABNZ4n4QyvWva7KlD+VOihp z7H79Dysk6/qpel4VP4EoO3W1fWcX7cYBk02QLcuy764O8veDA6xhfX//5ajgSlc AmzxIXYZvDuZEwIP1MSqd9RZ5pDQcjDqqUiAv4qr/KX4FR1GTHMiGXT8HGY73oHX Mcawmk+a9hf6kLeA84y7C7f5fLLXrmGNkm5zuuMz46O9YSZvDImij759meU32ghc nikYV128GcgSU0wH91vkRbnRT9shjDf2dqx8uvKrcStX3H1wN77+Zo7t2ggeU+M3 LOJu8TBD0Ne8bu4edG3lfoypPxAXN4Q/s+Qzj0rsoEcTrVwcYCyF8hyqFsejztt6 E1+EYDRpxwBstSwtb2B0Kl54UdOP1lQ0dqzrgEVd8efx40m8Zg8TRh8DRDkbDCC2 606vhpLaAoXQgtfkRXGy+/lW4dSeQ44wmJT328BXHzZFeXIRce2jh1tUjPVbmLU5 T9wtxItywu2zRTSS3By+uTEE8mSOA7WVXb6fGo9LmcAPe2enZ7c1idn4ny6REoLA sS1kf7/SORyb1JTo1oruZmYNWt++nSpIS6Pbl4EnBfoSFs4VELCyAtudSnV1BulQ P96RgTmTjMpEzLT79Mn3G1JXuNUhW1hTiT5rmte0lGrgG9rJcdNrrQtsPpCt9Dgl St9giJqbhZg= =H1jm - -----END PGP SIGNATURE----- - --------------------------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 iQIVAwUBX7XS4eNLKJtyKPYoAQhAURAAsUGzjyHeeN/NIVTTf1qPHarjbDSaH/jr ab7LfGibMtHunVNS8WwU498J6o9SzMsN606zs/Uo4oqejTIZlezycyFRKX/qMCkC l6Dx16OvpdwOazdmHLIp9niH/XVN4QaJAxwgbs/YKiPInCQjQEcgO9pOl3o46803 GND2QKW6XzEq9/A8PNTYI/2I5ghnqdv3BUXqLL5Jz/Ka3pCzczi7hO1zelYo0hto J36awwurTZOsk4uihl1pjfWNVSAjW9HQz6ABCNdqoQEsADdy8IQXfcaol6XB5xuK YtFp9Rjzy9/lzV5olSlaKtGzJWBXSzHUpY8GsRPklcVsr9PP4Q75KKGosKBnhTsr 0zU5uiP4+6vPez8z4m3KA8htp+gMODI5OofhhbTt2DKgLnQ9aAnPbPZRWAtq0ocb YKV0+9gHB4R3cKrDNlbsuvlcSsgN4WfYcy772pnH3zQwkumPXG3wuFAoD4QLYIc7 r4S8rPXrm1JOr0f5iCwUMG3p6Izqmp8XsUZEWj0Z5RhjQ2/9DvAU4CchCSqNVxRr Ehk/DEgcAk046lyU2dm1YDGaPH8ij/9wD5seU1UYApp61jRk9W0Hy5IGgO/ker3h VipAvlwYyDveW7BRz7LBXwjqn496Jyg+TiH4y0UJzpHVU9HtiL9oAp9F5y0ITd41 izTnerLNQ3w= =E1yc -----END PGP SIGNATURE-----