Information disclosure in Mozilla Firefox - CVE-2023-25741

Vulnerability identifier: #VU72262

CSH Severity: Low

CVSS v4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-25741

CWE-ID: CWE-200

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to information disclosure when dragging and dropping an image cross-origin. A remote attacker can obtain the image size.

Mozilla Firefox
Gentoo Linux
Ubuntu
Firefox for Android
Firefox Focus for Android
mail-client/thunderbird
mail-client/thunderbird-bin
firefox (Ubuntu package)

Install updates from vendor's website.

Mozilla Firefox - update to 110.0
Firefox for Android - update to 110.0
Firefox Focus for Android - update to 110.0.1
mail-client/thunderbird - update to 102.10.0
mail-client/thunderbird-bin - update to 102.10.0
firefox (Ubuntu package) - addressed in versions 110.0+build3-0ubuntu0.18.04.1, 110.0+build3-0ubuntu0.20.04.1, 110.0.1+build2-0ubuntu0.18.04.1, 110.0.1+build2-0ubuntu0.20.04.1

• https://www.mozilla.org/en-US/security/advisories/mfsa2023-05/

• Multiple vulnerabilities in Mozilla Firefox and Firefox ESR
• Multiple vulnerabilities in Firefox for Android
• Multiple vulnerabilities in Firefox Focus for Android
• Ubuntu update for firefox
• Ubuntu update for firefox
• Gentoo update for Mozilla Thunderbird