CVE-2024-5690

MEDIUM

Firefox < 127.0 and ESR < 115.12 - Information Disclosure via External Protocol Handler Timing

Title source: llm

Description

By monitoring the time certain operations take, an attacker could have guessed which external protocol handlers were functional on a user's system. This vulnerability affects Firefox < 127, Firefox ESR < 115.12, and Thunderbird < 115.12.

References (6)

Core 6

Core References

Issue Tracking, Permissions Required

https://bugzilla.mozilla.org/show_bug.cgi?id=1883693

Mailing List

https://lists.debian.org/debian-lts-announce/2024/06/msg00000.html

Mailing List

https://lists.debian.org/debian-lts-announce/2024/06/msg00010.html

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2024-25/

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2024-26/

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2024-28/

Scores

CVSS v3 4.3

EPSS 0.0074

EPSS Percentile 49.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-203

Status published

Products (4)

debian/debian_linux 10.0

mozilla/firefox < 127.0

mozilla/firefox_esr < 115.12

mozilla/thunderbird < 115.12

Published Jun 11, 2024

Tracked Since Feb 18, 2026