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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.1970 MFSA 2020-22 Security Vulnerabilities fixed in Thunderbird 68.9.0 5 June 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: thunderbird Publisher: Mozilla Operating System: Windows UNIX variants (UNIX, Linux, OSX) Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Denial of Service -- Remote with User Interaction Access Confidential Data -- Remote with User Interaction Reduced Security -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2020-12410 CVE-2020-12406 CVE-2020-12405 CVE-2020-12399 CVE-2020-12398 Reference: ESB-2020.1934 ESB-2020.1929 ESB-2020.1920 ESB-2020.1919 Original Bulletin: https://www.mozilla.org/en-US/security/advisories/mfsa2020-22/ - --------------------------BEGIN INCLUDED TEXT-------------------- Mozilla Foundation Security Advisory 2020-22 Security Vulnerabilities fixed in Thunderbird 68.9.0 Announced June 2, 2020 Impact high Products Thunderbird Fixed in Thunderbird 68.9 # CVE-2020-12399: Timing attack on DSA signatures in NSS library Reporter Cesar Pereida Garcia and the Network and Information Security Group (NISEC) at Tampere University Impact high Description NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys. References o Bug 1631576 # CVE-2020-12405: Use-after-free in SharedWorkerService Reporter Marcin 'Icewall' Noga of Cisco Talos Impact high Description When browsing a malicious page, a race condition in our SharedWorkerService could occur and lead to a potentially exploitable crash. References o Bug 1631618 # CVE-2020-12406: JavaScript Type confusion with NativeTypes Reporter Iain Ireland Impact high Description Mozilla developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. References o Bug 1639590 # CVE-2020-12410: Memory safety bugs fixed in Thunderbird 68.9.0 Reporter Mozilla developers Impact high Description Mozilla developers Tom Tung and Karl Tomlinson reported memory safety bugs present in Firefox 68.8. 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 68.9.0 # CVE-2020-12398: Security downgrade with IMAP STARTTLS leads to information leakage Reporter Damian Poddebniak Impact high Description If Thunderbird is configured to use STARTTLS for an IMAP server, and the server sends a PREAUTH response, then Thunderbird will continue with an unencrypted connection, causing email data to be sent without protection. References o Bug 1613623 - --------------------------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. 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