medium 4.3

CVE-2024-5690 json

By monitoring the time certain operations take, an attacker could have guessed which external protocol handlers were functional on a user's…

published 2024-06-11 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-46862

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits: 0; none known

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.

Patch / fix

fixed in 3 distros 7

Mozilla Firefox 127
Mozilla Firefox ESR 115.12
Mozilla Thunderbird 115.12

debian ubuntu red hat suse opensuse almalinux rocky linux

firefox-esr Debian 12 115.12.0esr-1~deb12u1
firefox-esr Debian 14, Debian 13 115.12.0esr-1
thunderbird Debian 12 1:115.12.0-1~deb12u1
thunderbird Debian 14, Debian 13 1:115.12.0-1

debian advisories DEBIAN-CVE-2024-5690

firefox Ubuntu 20.04 LTS 127.0.2+build1-0ubuntu0.20.04.1
thunderbird Ubuntu 20.04 LTS 1:115.12.0+build3-0ubuntu0.20.04.1
thunderbird Ubuntu 22.04 LTS 1:115.12.0+build3-0ubuntu0.22.04.1

ubuntu advisories UBUNTU-CVE-2024-5690

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

firefox RHEL 8 115.12.0-1.el8_10
thunderbird RHEL 8 115.12.1-1.el8_10
firefox RHEL 7 115.12.0-1.el7_9
thunderbird RHEL 7 115.12.1-1.el7_9
thunderbird RHEL 9 115.12.1-1.el9_4
firefox RHEL 9 115.12.0-1.el9_4
firefox-x11 RHEL 9 115.12.0-1.el9_4
thunderbird RHEL 8.2 AUS 115.12.1-1.el8_2

red hat advisories RHSA-2024:4001 RHSA-2024:3972 RHSA-2024:4063 RHSA-2024:3954 RHSA-2024:4036 RHSA-2024:3958

MozillaFirefox SLES for SAP 15 SP4, SLES for SAP 15 SP3, SLES for SAP 15 SP2 +12 more 115.13.0-150200.152.143.1
MozillaFirefox SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 115.13.0-112.218.1
MozillaThunderbird SLE Workstation Extension 15 SP6, SLE Workstation Extension 15 SP5, SLE Module for Package Hub 15 SP6 +3 more 115.12.0-150200.8.163.1
MozillaFirefox SLES for SAP 15 SP4, SLES for SAP 15 SP3, SLES for SAP 15 SP2 +12 more 115.12.0-150200.152.140.2
MozillaFirefox SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 115.12.0-112.215.1

suse advisories SUSE-SU-2024:2399-1 SUSE-SU-2024:2371-1 SUSE-SU-2024:2073-1 SUSE-SU-2024:2061-1 SUSE-SU-2024:2012-1

firefox-esr openSUSE Tumbleweed 128.5.1-1.1
MozillaThunderbird openSUSE Tumbleweed 115.12.0-1.1
MozillaFirefox openSUSE Tumbleweed 127.0-1.1

opensuse advisories openSUSE-SU-2024:14572-1 openSUSE-SU-2024:14049-1 openSUSE-SU-2024:14044-1

thunderbird AlmaLinux 9 115.12.1-1.el9_4.alma.1
thunderbird AlmaLinux 8 115.12.1-1.el8_10.alma.1
firefox AlmaLinux 8 115.12.0-1.el8_10.alma.1
firefox AlmaLinux 9 115.12.0-1.el9_4.alma.1
firefox-x11 AlmaLinux 9 115.12.0-1.el9_4.alma.1

almalinux advisories ALSA-2024:4002 ALSA-2024:4036 ALSA-2024:3954 ALSA-2024:3955

firefox Rocky Linux 9 115.12.0-1.el9_4
thunderbird Rocky Linux 9 115.12.1-1.el9_4
firefox Rocky Linux 8 115.12.0-1.el8_10
thunderbird Rocky Linux 8 115.12.1-1.el8_10

rocky linux advisories RLSA-2024:3955 RLSA-2024:4002 RLSA-2024:3954 RLSA-2024:4036

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-5690 updated 2026-11-07 cvss 6.1

Mozilla: External protocol handlers leaked by timing attack

Red Hat Enterprise Linux 6 firefox, thunderbird
affected: no fix planned “Out of support scope”
Red Hat Enterprise Linux AppStream (v. 8) firefox 115.12.0-1.el8_10, thunderbird 115.12.1-1.el8_10
fixed: vendor fix RHSA-2024:3954
Red Hat Enterprise Linux AppStream (v. 9) firefox 115.12.0-1.el9_4, firefox-x11 115.12.0-1.el9_4, thunderbird 115.12.1-1.el9_4
fixed: vendor fix RHSA-2024:3955
Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox 115.12.0-1.el8_2, thunderbird 115.12.1-1.el8_2
fixed: vendor fix RHSA-2024:3952
Red Hat Enterprise Linux AppStream AUS (v.8.4) firefox 115.12.0-1.el8_4, thunderbird 115.12.1-1.el8_4
fixed: vendor fix RHSA-2024:3953
Red Hat Enterprise Linux AppStream AUS (v.8.6) firefox 115.12.0-1.el8_6, thunderbird 115.12.1-1.el8_6
fixed: vendor fix RHSA-2024:3972
Red Hat Enterprise Linux AppStream E4S (v.8.4) firefox 115.12.0-1.el8_4, thunderbird 115.12.1-1.el8_4
fixed: vendor fix RHSA-2024:3953
Red Hat Enterprise Linux AppStream E4S (v.8.6) firefox 115.12.0-1.el8_6, thunderbird 115.12.1-1.el8_6
fixed: vendor fix RHSA-2024:3972

show 6 more

Red Hat Enterprise Linux AppStream E4S (v.9.0) firefox 115.12.0-1.el9_0, thunderbird 115.12.1-1.el9_0
fixed: vendor fix RHSA-2024:3958
Red Hat Enterprise Linux AppStream EUS (v.8.8) firefox 115.12.0-1.el8_8, thunderbird 115.12.1-1.el8_8
fixed: vendor fix RHSA-2024:3950
Red Hat Enterprise Linux AppStream EUS (v.9.2) firefox 115.12.0-1.el9_2, firefox-x11 115.12.0-1.el9_2, thunderbird 115.12.1-1.el9_2
fixed: vendor fix RHSA-2024:3949
Red Hat Enterprise Linux AppStream TUS (v.8.4) firefox 115.12.0-1.el8_4, thunderbird 115.12.1-1.el8_4
fixed: vendor fix RHSA-2024:3953
Red Hat Enterprise Linux AppStream TUS (v.8.6) firefox 115.12.0-1.el8_6, thunderbird 115.12.1-1.el8_6
fixed: vendor fix RHSA-2024:3972
Red Hat Enterprise Linux Client (v. 7) firefox 115.12.0-1.el7_9, thunderbird 115.12.1-1.el7_9 Red Hat Enterprise Linux Client Optional (v. 7) firefox 115.12.0-1.el7_9 Red Hat Enterprise Linux Server (v. 7) firefox 115.12.0-1.el7_9 Red Hat Enterprise Linux Server Optional (v. 7) firefox 115.12.0-1.el7_9, thunderbird 115.12.1-1.el7_9 Red Hat Enterprise Linux Workstation (v. 7) firefox 115.12.0-1.el7_9, thunderbird 115.12.1-1.el7_9 Red Hat Enterprise Linux Workstation Optional (v. 7) firefox 115.12.0-1.el7_9
fixed: vendor fix RHSA-2024:3951

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 2 y ago (2024-06-14)

Exploit prediction

0.74% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
NVD	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Affected products

Mozilla Firefox
Mozilla Firefox ESR
Mozilla Thunderbird

Classification

Weakness

CWE-203 Observable Discrepancy

References

mozilla.org /security/advisories/mfsa2024-25/
vendor-advisory
mozilla.org /security/advisories/mfsa2024-26/
vendor-advisory
mozilla.org /security/advisories/mfsa2024-28/
vendor-advisory
bugzilla.mozilla.org /show_bug.cgi?id=1883693
issue-tracking, permissions-required
lists.debian.org /debian-lts-announce/2024/06/msg00000.html
mailing-list
lists.debian.org /debian-lts-announce/2024/06/msg00010.html
mailing-list

Sources

CVE List CVE-2024-5690
NVD CVE-2024-5690

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary