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ubuntuUbuntuUSN-4756-1
HistoryFeb 26, 2021 - 12:00 a.m.

Firefox vulnerabilities

2021-02-2600:00:00
ubuntu.com
87

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

9.1 High

AI Score

Confidence

Low

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

Releases

  • Ubuntu 20.10
  • Ubuntu 20.04 LTS
  • Ubuntu 18.04 ESM
  • Ubuntu 16.04 ESM

Packages

  • firefox - Mozilla Open Source web browser

Details

Multiple security issues were discovered in Firefox. If a user were
tricked into opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, obtain sensitive
information, conduct cross-site scripting (XSS) attacks, bypass HTTP auth
phishing warnings, or execute arbitrary code.

OSVersionArchitecturePackageVersionFilename
Ubuntu20.10noarchfirefox< 86.0+build3-0ubuntu0.20.10.1UNKNOWN
Ubuntu20.10noarchfirefox-dbg< 86.0+build3-0ubuntu0.20.10.1UNKNOWN
Ubuntu20.10noarchfirefox-dev< 86.0+build3-0ubuntu0.20.10.1UNKNOWN
Ubuntu20.10noarchfirefox-geckodriver< 86.0+build3-0ubuntu0.20.10.1UNKNOWN
Ubuntu20.10noarchfirefox-locale-af< 86.0+build3-0ubuntu0.20.10.1UNKNOWN
Ubuntu20.10noarchfirefox-locale-an< 86.0+build3-0ubuntu0.20.10.1UNKNOWN
Ubuntu20.10noarchfirefox-locale-ar< 86.0+build3-0ubuntu0.20.10.1UNKNOWN
Ubuntu20.10noarchfirefox-locale-as< 86.0+build3-0ubuntu0.20.10.1UNKNOWN
Ubuntu20.10noarchfirefox-locale-ast< 86.0+build3-0ubuntu0.20.10.1UNKNOWN
Ubuntu20.10noarchfirefox-locale-az< 86.0+build3-0ubuntu0.20.10.1UNKNOWN
Rows per page:
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nessus
nessus
Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : Firefox vulnerabilities (USN-4756-1)
2021-03-23 00:00:00
Mozilla Firefox < 86.0
2021-02-23 00:00:00
Mozilla Firefox < 86.0
2021-02-23 00:00:00
osv
osv
firefox vulnerabilities
2021-02-26 18:11:10
thunderbird - security update
2021-03-01 00:00:00
firefox-esr - security update
2021-02-24 00:00:00
openvas
openvas
Mozilla Firefox Security Advisories (MFSA2021-07, MFSA2021-09) - Mac OS X
2021-02-24 00:00:00
Mozilla Firefox Security Advisories (MFSA2021-07, MFSA2021-09) - Windows
2021-02-24 00:00:00
Ubuntu: Security Advisory (USN-4756-1)
2022-08-26 00:00:00
kaspersky
kaspersky
KLA12090 Multiple vulnerablities in Mozilla Firefox
2021-02-23 00:00:00
KLA12092 Multiple vulnerabilities in Mozilla Thunderbird
2021-02-23 00:00:00
KLA12091 Multiple vulnerabilities in Mozilla Firefox ESR
2021-02-23 00:00:00
mozilla
mozilla
Security Vulnerabilities fixed in Firefox 86 — Mozilla
2021-02-23 00:00:00
Security Vulnerabilities fixed in Firefox ESR 78.8 — Mozilla
2021-02-23 00:00:00
Security Vulnerabilities fixed in Thunderbird 78.8 — Mozilla
2021-02-23 00:00:00
almalinux
almalinux
Important: thunderbird security update
2021-02-24 14:31:21
Critical: firefox security update
2021-02-24 14:17:36
debian
debian
[SECURITY] [DLA 2575-1] firefox-esr security update
2021-02-25 10:48:48
[SECURITY] [DSA 4866-1] thunderbird security update
2021-02-28 18:49:00
[SECURITY] [DLA 2578-1] thunderbird security update
2021-03-01 14:44:10
amazon
amazon
Important: thunderbird
2021-03-18 01:13:00
redhat
redhat
(RHSA-2021:0661) Important: thunderbird security update
2021-02-24 14:32:26
(RHSA-2021:0656) Critical: firefox security update
2021-02-24 14:31:18
(RHSA-2021:0662) Important: thunderbird security update
2021-02-24 14:32:51
ibm
ibm
Security Bulletin: Multiple vulnerabilities of Mozilla Firefox (less than Firefox 78.9.0 ESR + CVE-2021-23978) have affected Synthetic Playback Agent 8.1.4.0-8.1.4 IF13 + CP4MCM2.2
2021-05-12 02:37:56
Security Bulletin: Multiple vulnerabilities in Mozilla Firefox affect IBM Cloud Pak for Multicloud Management Monitoring
2021-05-18 11:41:03
altlinux
altlinux
Security fix for the ALT Linux 10 package thunderbird version 78.8.0-alt1
2021-02-25 00:00:00
Security fix for the ALT Linux 10 package firefox-esr version 78.8.0-alt1
2021-02-23 00:00:00
suse
suse
Security update for MozillaFirefox (important)
2021-03-03 00:00:00
Security update for MozillaThunderbird (important)
2021-03-06 00:00:00
oraclelinux
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thunderbird security update
2021-02-26 00:00:00
firefox security update
2021-02-26 00:00:00
thunderbird security update
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centos
thunderbird security update
2021-02-27 14:34:56
firefox security update
2021-02-27 14:34:20
mageia
mageia
Updated firefox packages fix security vulnerabilities
2021-03-04 15:26:19
Updated thunderbird packages fix security vulnerabilities
2021-03-04 15:26:19
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Thunderbird vulnerabilities
2021-05-06 00:00:00
threatpost
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Mozilla Patches Bugs in Firefox, Now Blocks Cross-Site Cookie Tracking
2021-02-24 20:50:29
gentoo
gentoo
Mozilla Firefox: Multiple vulnerabilities
2021-04-30 00:00:00
Mozilla Thunderbird: Multiple vulnerabilities
2021-04-30 00:00:00
ubuntucve
ubuntucve
CVE-2021-23971
2021-02-26 00:00:00
CVE-2021-23975
2021-02-26 00:00:00
CVE-2021-23970
2021-02-26 00:00:00
cve
cve
CVE-2021-23979
2021-02-26 16:15:00
CVE-2021-23970
2021-02-26 02:15:00
CVE-2021-23974
2021-02-26 02:15:00
alpinelinux
alpinelinux
CVE-2021-23971
2021-02-26 02:15:00
CVE-2021-23972
2021-02-26 02:15:00
CVE-2021-23979
2021-02-26 16:15:00
prion
prion
Hardcoded credentials
2021-02-26 02:15:00
Design/Logic Flaw
2021-02-26 02:15:00
Code injection
2021-02-26 02:15:00
veracode
veracode
Multithreaded WASM Triggered Assertions
2021-02-25 00:07:02
Phishing Attack
2021-02-25 00:07:06
Arbitrary Code Execution
2021-02-25 00:07:16
debiancve
debiancve
CVE-2021-23975
2021-02-26 02:15:00
CVE-2021-23971
2021-02-26 02:15:00
CVE-2021-23970
2021-02-26 02:15:00
redhatcve
redhatcve
CVE-2021-23968
2021-02-24 01:36:17
CVE-2021-23973
2021-02-24 01:36:25
CVE-2021-23978
2021-02-24 01:36:17
rosalinux
rosalinux
Advisory ROSA-SA-2021-1986
2021-07-02 18:16:55
Advisory ROSA-SA-2021-1835
2021-07-02 16:43:38

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

9.1 High

AI Score

Confidence

Low

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
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