10 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.007 Low
EPSS
Percentile
80.1%
Mozilla Thunderbird is a standalone mail and newsgroup client.
This update upgrades Thunderbird to version 91.3.0.
Security Fix(es):
Mozilla: Use-after-free in HTTP2 Session object
Mozilla: Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3
Mozilla: iframe sandbox rules did not apply to XSLT stylesheets (CVE-2021-38503)
Mozilla: Use-after-free in file picker dialog (CVE-2021-38504)
Mozilla: Firefox could be coaxed into going into fullscreen mode without notification or warning (CVE-2021-38506)
Mozilla: Opportunistic Encryption in HTTP2 could be used to bypass the Same-Origin-Policy on services hosted on other ports (CVE-2021-38507)
Mozilla: Permission Prompt could be overlaid, resulting in user confusion and potential spoofing (CVE-2021-38508)
Mozilla: Javascript alert box could have been spoofed onto an arbitrary domain (CVE-2021-38509)
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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
almalinux | 8 | x86_64 | thunderbird | < 91.3.0-2.el8_4.alma | thunderbird-91.3.0-2.el8_4.alma.x86_64.rpm |
almalinux | 8 | x86_64 | thunderbird | < 91.3.0-2.el8_4.alma.plus | thunderbird-91.3.0-2.el8_4.alma.plus.x86_64.rpm |
10 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.007 Low
EPSS
Percentile
80.1%