Mozilla Foundation Security Advisory 2023-20
Security Vulnerabilities fixed in Firefox 114
- Announced
- June 6, 2023
- Impact
- high
- Products
- Firefox
- Fixed in
-
- Firefox 114
#CVE-2023-34414: Click-jacking certificate exceptions through rendering lag
- Reporter
- Irvan Kurniawan
- Impact
- high
Description
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.
References
#CVE-2023-34415: Site-isolation bypass on sites that allow open redirects to data: urls
- Reporter
- Jun Kokatsu
- Impact
- moderate
Description
When choosing a site-isolated process for a document loaded from a data: URL that was the result of a redirect, Firefox would load that document in the same process as the site that issued the redirect. This bypassed the site-isolation protections against Spectre-like attacks on sites that host an "open redirect". Firefox no longer follows HTTP redirects to data: URLs.
References
#CVE-2023-34416: Memory safety bugs fixed in Firefox 114 and Firefox ESR 102.12
- Reporter
- Mozilla developers and community
- Impact
- high
Description
Mozilla developers and community members Gabriele Svelto, Andrew McCreight, the Mozilla Fuzzing Team, Sean Feng, and Sebastian Hengst reported memory safety bugs present in Firefox 113 and Firefox ESR 102.11. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.
References
#CVE-2023-34417: Memory safety bugs fixed in Firefox 114
- Reporter
- Mozilla developers and community
- Impact
- high
Description
Mozilla developers and community members Andrew McCreight, Randell Jesup, and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 113. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.