CVE-2023-34414

NameCVE-2023-34414
DescriptionThe 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3448-1, DLA-3452-1, DSA-5421-1, DSA-5423-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid126.0-1fixed
firefox-esr (PTS)buster91.12.0esr-1~deb10u1vulnerable
buster (security)115.11.0esr-1~deb10u1fixed
bullseye115.7.0esr-1~deb11u1fixed
bullseye (security)115.11.0esr-1~deb11u1fixed
bookworm115.7.0esr-1~deb12u1fixed
bookworm (security)115.11.0esr-1~deb12u1fixed
sid, trixie115.11.0esr-1fixed
thunderbird (PTS)buster1:91.12.0-1~deb10u1vulnerable
buster (security)1:115.11.0-1~deb10u1fixed
bullseye1:115.7.0-1~deb11u1fixed
bullseye (security)1:115.11.0-1~deb11u1fixed
bookworm1:115.7.0-1~deb12u1fixed
bookworm (security)1:115.11.0-1~deb12u1fixed
sid, trixie1:115.11.0-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)114.0-1
firefox-esrsourcebuster102.12.0esr-1~deb10u1DLA-3448-1
firefox-esrsourcebullseye102.12.0esr-1~deb11u1DSA-5421-1
firefox-esrsourcebookworm102.12.0esr-1~deb12u1DSA-5421-1
firefox-esrsource(unstable)102.12.0esr-1
thunderbirdsourcebuster1:102.12.0-1~deb10u1DLA-3452-1
thunderbirdsourcebullseye1:102.12.0-1~deb11u1DSA-5423-1
thunderbirdsourcebookworm1:102.12.0-1~deb12u1DSA-5423-1
thunderbirdsource(unstable)1:102.12.0-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2023-19/#CVE-2023-34414
https://www.mozilla.org/en-US/security/advisories/mfsa2023-20/#CVE-2023-34414
https://www.mozilla.org/en-US/security/advisories/mfsa2023-21/#CVE-2023-34414

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