This security bulletin contains information about 2 vulnerabilities.
EUVDB-ID: #VU77002
Risk: Medium
CVSSv3.1:
CVE-ID: CVE-2023-34414
CWE-ID: CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)
Exploit availability: No
Description
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to incorrect processing of user-supplied data when displaying certificate exceptions. 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.
Mitigation
Update the affected package MozillaFirefox to the latest version.
Vulnerable software versions
Desktop Applications Module: 15-SP4 - 15-SP5
SUSE Linux Enterprise Server for SAP Applications 15: SP2 - SP5
SUSE Linux Enterprise Server 15: SP2 - SP5
SUSE Linux Enterprise Real Time 15: SP3 - SP5
SUSE Linux Enterprise High Performance Computing 15: SP2 - SP5
SUSE Linux Enterprise Desktop 15: SP4 - SP5
SUSE Linux Enterprise Server 15 SP3 LTSS: 15-SP3 - 15-SP3
SUSE Linux Enterprise Server 15 SP2 LTSS: 15-SP2 - 15-SP2
SUSE Linux Enterprise High Performance Computing LTSS 15: SP3 - SP3
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