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kasperskyKaspersky LabKLA12469
HistoryMar 05, 2022 - 12:00 a.m.

KLA12469 Multiple vulnerabilities in Mozilla Firefox ESR

2022-03-0500:00:00
Kaspersky Lab
threats.kaspersky.com
18
mozilla firefox esr
arbitrary code execution
denial of service
use after free
xslt parameter processing
webgpu ipc framework
mfsa2022-09
cve-2022-26486
cve-2022-26485
update
ace
dos
sb

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

10

Confidence

High

EPSS

0.009

Percentile

82.4%

Multiple vulnerabilities were found in Mozilla Firefox ESR. Malicious users can exploit these vulnerabilities to execute arbitrary code, cause denial of service.

Below is a complete list of vulnerabilities:

  1. Use after free vulnerability in XSLT parameter processing can be exploited to cause denial of service or execute arbitrary code.
  2. Use after free vulnerability in WebGPU IPC Framework can be exploited to cause denial of service or execute arbitrary code.

Original advisories

MFSA2022-09

Exploitation

Public exploits exist for this vulnerability.

Malware exists for this vulnerability. Usually such malware is classified as Exploit. More details.

Related products

Mozilla-Firefox-ESR

CVE list

CVE-2022-26486 critical

CVE-2022-26485 critical

Solution

Update to the latest version

Download Firefox ESR

Impacts

  • ACE

Arbitrary code execution. Exploitation of vulnerabilities with this impact can lead to executing by abuser any code or commands at vulnerable machine or process.

  • DoS

Denial of service. Exploitation of vulnerabilities with this impact can lead to loss of system availability or critical functional fault.

  • SB

Security bypass. Exploitation of vulnerabilities with this impact can lead to performing actions restricted by current security settings.

Affected Products

  • Mozilla Firefox ESR earlier than 91.6.1

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

10

Confidence

High

EPSS

0.009

Percentile

82.4%