MFSA2023-02 Firefox: Security Vulnerabilities fixed in Firefox ESR 102.7 (CVE-2023-23603)

MFSA2023-02 Firefox: Security Vulnerabilities fixed in Firefox ESR 102.7 (CVE-2023-23603)

Severity

7

CVSS

(AV:N/AC:M/Au:N/C:C/I:N/A:N)

Published

01/17/2023

Created

01/19/2023

Added

01/18/2023

Modified

01/30/2025

Description

Regular expressions used to filter out forbidden properties and values from style directives in calls to <code>console.log</code> weren't accounting for external URLs. Data could then be potentially exfiltrated from the browser. This vulnerability affects Firefox < 109, Thunderbird < 102.7, and Firefox ESR < 102.7.

Solution(s)

• mozilla-firefox-esr-upgrade-102_7

References

• https://attackerkb.com/topics/cve-2023-23603
• CVE - 2023-23603
• http://www.mozilla.org/security/announce/2023/mfsa2023-02.html