Summary
Mozilla Thunderbird is a standalone mail and newsgroup client.
This update upgrades Thunderbird to version 91.2.0.
Security Fix(es):
* Mozilla: Use-after-free in MessageTask (CVE-2021-38496)
* Mozilla: Memory safety bugs fixed in Firefox 93, Firefox ESR 78.15, and Firefox ESR 91.2 (CVE-2021-38500)
* Mozilla: Memory safety bugs fixed in Firefox 93 and Firefox ESR 91.2 (CVE-2021-38501)
* Mozilla: Downgrade attack on SMTP STARTTLS connections (CVE-2021-38502)
* rust-crossbeam-deque: race condition may lead to double free (CVE-2021-32810)
* Mozilla: Validation message could have been overlaid on another origin (CVE-2021-38497)
* Mozilla: Use-after-free of nsLanguageAtomService object (CVE-2021-38498)
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.
Fixed packages 1
| Release | Package | Fixed in |
|---|---|---|
| Rocky Linux · 8 | thunderbird | 0:91.2.0-1.el8_4 |
Vulnerabilities 7
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Critical 9.8
Data race in crossbeam-deque
crossbeam-deque is a package of work-stealing deques for building task schedulers when programming in Rust. In versions prior to 0.7.4 and 0.8.0, the result of the race condition is that one or more tasks in the worker queue can be popped twice instead of oth…
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Unscored —
During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting in memory corru…
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Unscored —
Through use of reportValidity() and window.open(), a plain-text validation message could have been overlaid on another …
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Unscored —
During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory…
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Unscored —
Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. Some of these bugs showed ev…
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Unscored —
Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. Some of these bugs showed ev…
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Unscored —
Thunderbird ignored the configuration to require STARTTLS security for an SMTP connection. A MITM could perform a downg…
References
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report
https://bugzilla.redhat.com/show_bug.cgi?id=1990342
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2011097
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2011098
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2011099
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2011100
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2011101
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2013469