#VU84565 Use-after-free in Firefox ESR - CVE-2023-6862

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Main Vulnerability Database Vulnerabilities #VU84565

#VU84565 Use-after-free in Firefox ESR - CVE-2023-6862

Published: December 19, 2023


Vulnerability identifier: #VU84565
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-6862
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Firefox ESR
Software vendor:
Mozilla

Description

The vulnerability allows a remote attacker to crash the browser.

The vulnerability exists due to a use-after-free error in nsDNSService::Init during browser startup. A remote attacker with control over the DNS server can cause the browser to crash.



Remediation

Install updates from vendor's website.

External links