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centosCentOS ProjectCESA-2021:0656
HistoryFeb 27, 2021 - 2:34 p.m.

firefox security update

2021-02-2714:34:20
CentOS Project
lists.centos.org
136

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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

82.3%

JSON

CentOS Errata and Security Advisory CESA-2021:0656

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

This update upgrades Firefox to version 78.8.0 ESR.

Security Fix(es):

  • Mozilla: Content Security Policy violation report could have contained the destination of a redirect (CVE-2021-23968)

  • Mozilla: Content Security Policy violation report could have contained the destination of a redirect (CVE-2021-23969)

  • Mozilla: Memory safety bugs fixed in Firefox 86 and Firefox ESR 78.8 (CVE-2021-23978)

  • Mozilla: MediaError message property could have leaked information about cross-origin resources (CVE-2021-23973)

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-February/086070.html

Affected packages:
firefox

Upstream details at:
https://access.redhat.com/errata/RHSA-2021:0656

OSVersionArchitecturePackageVersionFilename
CentOS7i686firefox< 78.8.0-1.el7.centosfirefox-78.8.0-1.el7.centos.i686.rpm
CentOS7x86_64firefox< 78.8.0-1.el7.centosfirefox-78.8.0-1.el7.centos.x86_64.rpm

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nessus
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Mozilla Firefox ESR < 78.8
2021-02-23 00:00:00
Debian DSA-4866-1 : thunderbird - security update
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CentOS 7 : thunderbird (CESA-2021:0661)
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debian
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amazon
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(RHSA-2021:0661) Important: thunderbird security update
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Security Vulnerabilities fixed in Firefox ESR 78.8 — Mozilla
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Security Vulnerabilities fixed in Firefox 86 — Mozilla
2021-02-23 00:00:00
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8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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

82.3%

JSON
Related for CESA-2021:0656
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