CVE-2023-34414 json
The error page for sites with invalid TLS certificates was missing the activation-delay Firefox uses to protect prompts and permission dial…
published 2023-06-19 3 y ago modified 2026-10-24 16 d ago also EUVD-2023-38491
- cvss
- 3.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 59%
- public exploits
- 0
- none known
Summary
The error page for sites with invalid TLS certificates was missing the activation-delay Firefox uses to protect prompts and permission dialogs from attacks that exploit human response time delays. If a malicious page elicited user clicks in precise locations immediately before navigating to a site with a certificate error and made the renderer extremely busy at the same time, it could create a gap between when the error page was loaded and when the display actually refreshed. With the right timing the elicited clicks could land in that gap and activate the button that overrides the certificate error for that site. This vulnerability affects Firefox ESR < 102.12, Firefox < 114, and Thunderbird < 102.12.
Patch / fix
- Mozilla Firefox ESR 102.12
- Mozilla Firefox 114
- Mozilla Thunderbird 102.12
- firefox-esr Debian 12 102.12.0esr-1~deb12u1
- firefox-esr Debian 14, Debian 13 102.12.0esr-1
- thunderbird Debian 12 1:102.12.0-1~deb12u1
- thunderbird Debian 14, Debian 13 1:102.12.0-1
debian advisories DEBIAN-CVE-2023-34414
- firefox Ubuntu 20.04 LTS 114.0+build3-0ubuntu0.20.04.1
- thunderbird Ubuntu 20.04 LTS 1:102.13.0+build1-0ubuntu0.20.04.1
- thunderbird Ubuntu 22.04 LTS 1:102.13.0+build1-0ubuntu0.22.04.1
ubuntu advisories UBUNTU-CVE-2023-34414
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 7 102.12.0-1.el7_9
- thunderbird RHEL 8 102.12.0-1.el8_8
- thunderbird RHEL 9 102.12.0-1.el9_2
- firefox RHEL 9 102.12.0-1.el9_2
- firefox-x11 RHEL 9 102.12.0-1.el9_2
- thunderbird RHEL 7 102.12.0-1.el7_9
- firefox RHEL 8 102.12.0-1.el8_8
- firefox RHEL 8.2 TUS, RHEL 8.2 E4S, RHEL 8.2 AUS 102.12.0-1.el8_2
red hat advisories RHSA-2023:3578RHSA-2023:3579RHSA-2023:3562RHSA-2023:3561RHSA-2023:3596RHSA-2023:3567
- MozillaThunderbird SLE Workstation Extension 15 SP5, SLE Workstation Extension 15 SP4, SLE Module for Package Hub 15 SP5 +3 more 102.12.0-150200.8.121.1
- MozillaFirefox SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES 15 SP3-LTSS +11 more 102.12.0-150200.152.90.1
- MozillaFirefox SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES 12 SP5 +6 more 102.12.0-112.162.1
- MozillaFirefox SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLE High Performance Computing 15 SP1-LTSS 102.12.0-150000.150.88.1
suse advisories SUSE-SU-2023:2612-1SUSE-SU-2023:2489-1SUSE-SU-2023:2441-1SUSE-SU-2023:2440-1
- firefox-esr openSUSE Tumbleweed 128.5.1-1.1
- MozillaThunderbird openSUSE Tumbleweed 102.12.0-1.1
- MozillaFirefox openSUSE Tumbleweed 114.0.1-1.1
opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:12990-1openSUSE-SU-2024:12991-1
- thunderbird AlmaLinux 9 102.12.0-1.el9_2.alma
- thunderbird AlmaLinux 8 102.12.0-1.el8_8.alma
- firefox AlmaLinux 9 102.12.0-1.el9_2.alma
- firefox-x11 AlmaLinux 9 102.12.0-1.el9_2.alma
- firefox AlmaLinux 8 102.12.0-1.el8_8.alma
almalinux advisories ALSA-2023:3587ALSA-2023:3588ALSA-2023:3589ALSA-2023:3590
- firefox Rocky Linux 8 102.12.0-1.el8_8
- thunderbird Rocky Linux 9 102.12.0-1.el9_2
- thunderbird Rocky Linux 8 102.12.0-1.el8_8
rocky linux advisories RLSA-2023:3590RLSA-2023:3587RLSA-2023:3588
- firefox-esr Alpine 3.23, Alpine 3.22, Alpine 3.21 +3 more 102.12.0-r0
alpine advisories ALPINE-CVE-2023-34414
Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
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-2023-34414 updated cvss 7.5
Mozilla: Click-jacking certificate exceptions through rendering lag
-
Red Hat Enterprise Linux 6 firefox, thunderbirdaffected: no fix planned “Out of support scope”
-
Red Hat Enterprise Linux AppStream (v. 8) firefox 102.12.0-1.el8_8, thunderbird 102.12.0-1.el8_8fixed: vendor fix RHSA-2023:3590
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Red Hat Enterprise Linux AppStream (v. 9) firefox 102.12.0-1.el9_2, firefox-x11 102.12.0-1.el9_2, thunderbird 102.12.0-1.el9_2fixed: vendor fix RHSA-2023:3589
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Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox 102.12.0-1.el8_2, thunderbird 102.12.0-1.el8_2fixed: vendor fix RHSA-2023:3578
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Red Hat Enterprise Linux AppStream AUS (v.8.4) firefox 102.12.0-1.el8_4, thunderbird 102.12.0-1.el8_4fixed: vendor fix RHSA-2023:3597
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Red Hat Enterprise Linux AppStream E4S (v. 8.1) firefox 102.12.0-1.el8_1, thunderbird 102.12.0-1.el8_1fixed: vendor fix RHSA-2023:3561
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Red Hat Enterprise Linux AppStream E4S (v. 8.2) firefox 102.12.0-1.el8_2, thunderbird 102.12.0-1.el8_2fixed: vendor fix RHSA-2023:3578
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Red Hat Enterprise Linux AppStream E4S (v.8.4) firefox 102.12.0-1.el8_4, thunderbird 102.12.0-1.el8_4fixed: vendor fix RHSA-2023:3597
show 5 moreshow fewer
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Red Hat Enterprise Linux AppStream EUS (v.8.6) firefox 102.12.0-1.el8_6, thunderbird 102.12.0-1.el8_6fixed: vendor fix RHSA-2023:3560
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Red Hat Enterprise Linux AppStream EUS (v.9.0) firefox 102.12.0-1.el9_0, thunderbird 102.12.0-1.el9_0fixed: vendor fix RHSA-2023:3562
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Red Hat Enterprise Linux AppStream TUS (v. 8.2) firefox 102.12.0-1.el8_2, thunderbird 102.12.0-1.el8_2fixed: vendor fix RHSA-2023:3578
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Red Hat Enterprise Linux AppStream TUS (v.8.4) firefox 102.12.0-1.el8_4, thunderbird 102.12.0-1.el8_4fixed: vendor fix RHSA-2023:3597
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Red Hat Enterprise Linux Client (v. 7) firefox 102.12.0-1.el7_9, thunderbird 102.12.0-1.el7_9 Red Hat Enterprise Linux Client Optional (v. 7) firefox 102.12.0-1.el7_9 Red Hat Enterprise Linux Server (v. 7) firefox 102.12.0-1.el7_9 Red Hat Enterprise Linux Server Optional (v. 7) firefox 102.12.0-1.el7_9, thunderbird 102.12.0-1.el7_9 Red Hat Enterprise Linux Workstation (v. 7) firefox 102.12.0-1.el7_9, thunderbird 102.12.0-1.el7_9 Red Hat Enterprise Linux Workstation Optional (v. 7) firefox 102.12.0-1.el7_9fixed: vendor fix RHSA-2023:3579
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
Exploit prediction
0.90% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 3.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L |
Affected products
- Mozilla Firefox ESR
- Mozilla Firefox
- Mozilla Thunderbird
Classification
- Weakness
-
- CWE-295 Improper Certificate Validation
References
-
mozilla.org
/security/advisories/mfsa2023-19/
vendor-advisory
-
mozilla.org
/security/advisories/mfsa2023-20/
vendor-advisory
-
mozilla.org
/security/advisories/mfsa2023-21/
vendor-advisory
-
bugzilla.mozilla.org
/show_bug.cgi?id=1695986
permissions-required
- security.gentoo.org /glsa/202312-03
- security.gentoo.org /glsa/202401-10
Sources
- CVE List CVE-2023-34414
- NVD CVE-2023-34414
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