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Kaspersky LabKLA12274

HistorySep 07, 2021 - 12:00 a.m.

KLA12274 Multiple vulnerabilities in Mozilla Firefox ESR

2021-09-0700:00:00

Kaspersky Lab

threats.kaspersky.com

mozilla

firefox

esr

vulnerabilities

arbitrary code execution

memory safety

CVSS2

6.8

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

CVSS3

8.8

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

AI Score

Confidence

High

EPSS

0.004

Percentile

74.7%

JSON

Multiple vulnerabilities were found in Mozilla Firefox ESR. Malicious users can exploit these vulnerabilities to execute arbitrary code.

Below is a complete list of vulnerabilities:

A memory safety vulnerability can be exploited to execute arbitrary code.
A code execution vulnerability for Windows can be exploited to execute arbitrary code.

Original advisories

MFSA2021-39

Related products

Mozilla-Firefox-ESR

CVE list

CVE-2021-38492 unknown

CVE-2021-38493 unknown

Solution

Update to the latest version

Download Firefox ESR

Impacts

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