Mozilla: >> Firefox >> 104.0 Security Vulnerabilities
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. This vulnerability affects Firefox < 114.
CVSS Score
9.8
EPSS Score
0.003
Published
2023-06-19
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.
CVSS Score
3.1
EPSS Score
0.001
Published
2023-06-19
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. This vulnerability affects Firefox < 114.
CVSS Score
6.1
EPSS Score
0.001
Published
2023-06-19
The return value from `gfx::SourceSurfaceSkia::Map()` wasn't being verified which could have potentially lead to a null pointer dereference. This vulnerability affects Firefox < 110.
CVSS Score
7.5
EPSS Score
0.003
Published
2023-06-19
An invalid downcast from `nsHTMLDocument` to `nsIContent` could have lead to undefined behavior. This vulnerability affects Firefox < 110.
CVSS Score
9.8
EPSS Score
0.004
Published
2023-06-19
A potential use-after-free in libaudio was fixed by disabling the AAudio backend when running on Android API below version 30.
*This bug only affects Firefox for Android. Other versions of Firefox are unaffected.* This vulnerability affects Firefox for Android < 110.1.0.
CVSS Score
7.5
EPSS Score
0.002
Published
2023-06-19
Different techniques existed to obscure the fullscreen notification in Firefox and Focus for Android. These could have led to potential user confusion and spoofing attacks.
*This bug only affects Firefox and Focus for Android. Other versions of Firefox are unaffected.* This vulnerability affects Firefox for Android < 112 and Focus for Android < 112.
CVSS Score
9.1
EPSS Score
0.004
Published
2023-06-19
A newline in a filename could have been used to bypass the file extension security mechanisms that replace malicious file extensions such as .lnk with .download. This could have led to accidental execution of malicious code.
*This bug only affects Firefox and Thunderbird on Windows. Other versions of Firefox and Thunderbird are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.
CVSS Score
9.8
EPSS Score
0.001
Published
2023-06-19
Similar to CVE-2023-28163, this time when choosing 'Save Link As', suggested filenames containing environment variable names would have resolved those in the context of the current user.
*This bug only affects Firefox and Thunderbird on Windows. Other versions of Firefox and Thunderbird are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.
CVSS Score
6.5
EPSS Score
0.002
Published
2023-06-19
When recording the screen while in Private Browsing on Firefox for Android the address bar and keyboard were not hidden, potentially leaking sensitive information.
*This bug only affects Firefox for Android. Other operating systems are unaffected.* This vulnerability affects Firefox for Android < 112 and Focus for Android < 112.
CVSS Score
6.5
EPSS Score
0.003
Published
2023-06-19