9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10 High
AI Score
Confidence
High
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.009 Low
EPSS
Percentile
82.4%
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.
bugzilla.redhat.com/show_bug.cgi?id=1990342
bugzilla.redhat.com/show_bug.cgi?id=2011097
bugzilla.redhat.com/show_bug.cgi?id=2011098
bugzilla.redhat.com/show_bug.cgi?id=2011099
bugzilla.redhat.com/show_bug.cgi?id=2011100
bugzilla.redhat.com/show_bug.cgi?id=2011101
bugzilla.redhat.com/show_bug.cgi?id=2013469
errata.rockylinux.org/RLSA-2021:3838
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10 High
AI Score
Confidence
High
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.009 Low
EPSS
Percentile
82.4%