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centosCentOS ProjectCESA-2021:0992
HistoryMar 26, 2021 - 6:11 p.m.

firefox security update

2021-03-2618:11:51
CentOS Project
lists.centos.org
126

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack 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

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

0.003 Low

EPSS

Percentile

67.8%

JSON

CentOS Errata and Security Advisory CESA-2021:0992

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

This update upgrades Firefox to version 78.9.0 ESR.

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.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2021-March/086087.html

Affected packages:
firefox

Upstream details at:
https://access.redhat.com/errata/RHSA-2021:0992

OSVersionArchitecturePackageVersionFilename
CentOS7i686firefox< 78.9.0-1.el7.centosfirefox-78.9.0-1.el7.centos.i686.rpm
CentOS7x86_64firefox< 78.9.0-1.el7.centosfirefox-78.9.0-1.el7.centos.x86_64.rpm

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6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack 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

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

0.003 Low

EPSS

Percentile

67.8%

JSON
Related for CESA-2021:0992
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