CVE-2023-23603 Affecting firefox-esr package, versions <102.7.0esr-1~deb11u1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.16% (38th percentile)

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  • Snyk IDSNYK-DEBIAN11-FIREFOXESR-3232817
  • published18 Jan 2023
  • disclosed2 Jun 2023

Introduced: 18 Jan 2023

CVE-2023-23603  (opens in a new tab)

How to fix?

Upgrade Debian:11 firefox-esr to version 102.7.0esr-1~deb11u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox-esr package and not the firefox-esr package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

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

CVSS Base Scores

version 3.1