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redhatRedHatRHSA-2021:0994
HistoryMar 25, 2021 - 11:32 a.m.

(RHSA-2021:0994) Important: thunderbird security update

2021-03-2511:32:05
access.redhat.com
52

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

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

0.003 Low

EPSS

Percentile

67.3%

JSON

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 78.9.0.

Security Fix(es):

  • Mozilla: Texture upload into an unbound backing buffer resulted in an out-of-bound read (CVE-2021-23981)

  • Mozilla: Memory safety bugs fixed in Firefox 87 and Firefox ESR 78.9 (CVE-2021-23987)

  • Mozilla: Internal network hosts could have been probed by a malicious webpage (CVE-2021-23982)

  • Mozilla: Malicious extensions could have spoofed popup information (CVE-2021-23984)

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.

OSVersionArchitecturePackageVersionFilename
RedHat8x86_64thunderbird-debuginfo< 78.9.0-3.el8_2thunderbird-debuginfo-78.9.0-3.el8_2.x86_64.rpm
RedHat8ppc64lethunderbird-debugsource< 78.9.0-3.el8_2thunderbird-debugsource-78.9.0-3.el8_2.ppc64le.rpm
RedHat8ppc64lethunderbird< 78.9.0-3.el8_2thunderbird-78.9.0-3.el8_2.ppc64le.rpm
RedHat8aarch64thunderbird< 78.9.0-3.el8_2thunderbird-78.9.0-3.el8_2.aarch64.rpm
RedHat8aarch64thunderbird-debuginfo< 78.9.0-3.el8_2thunderbird-debuginfo-78.9.0-3.el8_2.aarch64.rpm
RedHat8x86_64thunderbird-debugsource< 78.9.0-3.el8_2thunderbird-debugsource-78.9.0-3.el8_2.x86_64.rpm
RedHat8ppc64lethunderbird-debuginfo< 78.9.0-3.el8_2thunderbird-debuginfo-78.9.0-3.el8_2.ppc64le.rpm
RedHat8x86_64thunderbird< 78.9.0-3.el8_2thunderbird-78.9.0-3.el8_2.x86_64.rpm
RedHat8aarch64thunderbird-debugsource< 78.9.0-3.el8_2thunderbird-debugsource-78.9.0-3.el8_2.aarch64.rpm

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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

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

0.003 Low

EPSS

Percentile

67.3%

JSON
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