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ubuntuUbuntuUSN-5321-3
HistoryMar 24, 2022 - 12:00 a.m.

Firefox regressions

2022-03-2400:00:00
ubuntu.com
96
firefox
ubuntu 21.10
ubuntu 20.04
ubuntu 18.04
security issues
denial of service
spoofing
security restrictions
sensitive information
arbitrary code
toctou bug
addon signatures

CVSS3

9.6

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

8.9

Confidence

Low

EPSS

0.004

Percentile

74.8%

Releases

  • Ubuntu 21.10
  • Ubuntu 20.04 LTS
  • Ubuntu 18.04 ESM

Packages

  • firefox - Mozilla Open Source web browser

Details

USN-5321-1 fixed vulnerabilities in Firefox. The update introduced
several minor regressions. This update fixes the problem.

We apologize for the inconvenience.

Original advisory 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, spoof the browser
UI, bypass security restrictions, obtain sensitive information, or execute
arbitrary code. (CVE-2022-0843, CVE-2022-26381, CVE-2022-26382,
CVE-2022-26383, CVE-2022-26384, CVE-2022-26385)

A TOCTOU bug was discovered when verifying addon signatures during
install. A local attacker could potentially exploit this to trick a
user into installing an addon with an invalid signature.
(CVE-2022-26387)

OSVersionArchitecturePackageVersionFilename
Ubuntu21.10noarchfirefox< 98.0.2+build1-0ubuntu0.21.10.1UNKNOWN
Ubuntu21.10noarchfirefox-dbg< 98.0.2+build1-0ubuntu0.21.10.1UNKNOWN
Ubuntu21.10noarchfirefox-dev< 98.0.2+build1-0ubuntu0.21.10.1UNKNOWN
Ubuntu21.10noarchfirefox-geckodriver< 98.0.2+build1-0ubuntu0.21.10.1UNKNOWN
Ubuntu21.10noarchfirefox-locale-af< 98.0.2+build1-0ubuntu0.21.10.1UNKNOWN
Ubuntu21.10noarchfirefox-locale-an< 98.0.2+build1-0ubuntu0.21.10.1UNKNOWN
Ubuntu21.10noarchfirefox-locale-ar< 98.0.2+build1-0ubuntu0.21.10.1UNKNOWN
Ubuntu21.10noarchfirefox-locale-as< 98.0.2+build1-0ubuntu0.21.10.1UNKNOWN
Ubuntu21.10noarchfirefox-locale-ast< 98.0.2+build1-0ubuntu0.21.10.1UNKNOWN
Ubuntu21.10noarchfirefox-locale-az< 98.0.2+build1-0ubuntu0.21.10.1UNKNOWN
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CVSS3

9.6

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

8.9

Confidence

Low

EPSS

0.004

Percentile

74.8%