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kasperskyKaspersky LabKLA60726
HistorySep 12, 2023 - 12:00 a.m.

KLA60726 DoS vulnerability in Mozilla Firefox ESR

2023-09-1200:00:00
Kaspersky Lab
threats.kaspersky.com
20
mozilla
firefox
esr
vulnerability
dos
heap
buffer overflow
critical
exploit
update
advisory
cve-2023-4863
cve-2023-5129

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

9.7 High

AI Score

Confidence

High

0.609 Medium

EPSS

Percentile

97.8%

Heap buffer overflow vulnerability was found in Mozilla Firefox ESR.Β Malicious users can exploit this vulnerability to cause denial of service.

Original advisories

MFSA2023-40

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-2023-4863 critical

CVE-2023-5129 warning

Solution

Update to the latest version

Download Firefox ESR

Impacts

  • 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 102.15.1Mozilla Firefox ESR 115.x earlier than 115.2.1

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

9.7 High

AI Score

Confidence

High

0.609 Medium

EPSS

Percentile

97.8%