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CVSS: 5.5EPSS: 0%CPEs: 4EXPL: 0

19 Jun 2023 — A local attacker can trick the Mozilla Maintenance Service into applying an unsigned update file by pointing the service at an update file on a malicious SMB server. The update file can be replaced after the signature check, before the use, because the write-lock requested by the service does not work on a SMB server. *Note: This attack requires local system access and only affects Windows. Other operating systems are not affected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunder... • https://bugzilla.mozilla.org/show_bug.cgi?id=1806394 •

CVSS: 10.0EPSS: 0%CPEs: 4EXPL: 0

19 Jun 2023 — An attacker could have caused an out of bounds memory access using WebGL APIs, leading to memory corruption and a potentially exploitable crash. *This bug only affects Firefox and Thunderbird for macOS. Other operating systems are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10. An attacker could have caused an out of bounds memory access using WebGL APIs, leading to memory corruption and a potentially exploitable crash. *This bug only affects Firefox an... • https://bugzilla.mozilla.org/show_bug.cgi?id=1794292 • CWE-787: Out-of-bounds Write •

CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0

19 Jun 2023 — Protocol handlers `ms-cxh` and `ms-cxh-full` could have been leveraged to trigger a denial of service. *Note: This attack only affects Windows. Other operating systems are not affected.* This vulnerability affects Firefox < 113, Firefox ESR < 102.11, and Thunderbird < 102.11. Protocol handlers `ms-cxh` and `ms-cxh-full` could have been leveraged to trigger a denial of service. *Note: This attack only affects Windows. Other operating systems are not affected.* This vulnerability affects Firefox < 113, Firefo... • https://bugzilla.mozilla.org/show_bug.cgi?id=1828716 •

CVSS: 7.5EPSS: 0%CPEs: 3EXPL: 0

07 Jun 2023 — 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 elici... • https://bugzilla.mozilla.org/show_bug.cgi?id=1695986 • CWE-295: Improper Certificate Validation CWE-449: The UI Performs the Wrong Action •

CVSS: 10.0EPSS: 0%CPEs: 3EXPL: 0

07 Jun 2023 — Memory safety bugs present in Firefox 113, Firefox ESR 102.11, and Thunderbird 102.12. 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 ESR < 102.12, Firefox < 114, and Thunderbird < 102.12. The Mozilla Foundation Security Advisory describes this flaw as: Mozilla developers and community members Gabriele Svelto, Andrew McCreight, the Mozilla Fuzzing Team, Sean Feng,... • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1752703%2C1818394%2C1826875%2C1827340%2C1827655%2C1828065%2C1830190%2C1830206%2C1830795%2C1833339 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •

CVSS: 7.8EPSS: 0%CPEs: 3EXPL: 0

30 May 2023 — When downloading files through the Save As dialog on Windows with suggested filenames containing environment variable names, Windows would have resolved those in the context of the current user. <br>*This bug only affects Firefox on Windows. Other versions of Firefox are unaffected.*. This vulnerability affects Firefox < 111, Firefox ESR < 102.9, and Thunderbird < 102.9. Multiple vulnerabilities have been discovered in Mozilla Firefox, the worst of which could result in arbitrary code execution. • https://bugzilla.mozilla.org/show_bug.cgi?id=1817768 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •

CVSS: 9.4EPSS: 0%CPEs: 4EXPL: 1

30 May 2023 — After downloading a Windows <code>.url</code> shortcut from the local filesystem, an attacker could supply a remote path that would lead to unexpected network requests from the operating system. This also had the potential to leak NTLM credentials to the resource.<br>*This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8. • https://bugzilla.mozilla.org/show_bug.cgi?id=1784451 • CWE-601: URL Redirection to Untrusted Site ('Open Redirect') •

CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0

30 May 2023 — Members of the DEVMODEW struct set by the printer device driver weren't being validated and could have resulted in invalid values which in turn would cause the browser to attempt out of bounds access to related variables.
*This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8. Multiple vulnerabilities have been discovered in Mozilla Firefox, the worst of which could result in ... • https://bugzilla.mozilla.org/show_bug.cgi?id=1811852 • CWE-125: Out-of-bounds Read •

CVSS: 7.5EPSS: 0%CPEs: 3EXPL: 0

11 May 2023 — In multiple cases browser prompts could have been obscured by popups controlled by content. These could have led to potential user confusion and spoofing attacks. This vulnerability affects Firefox < 113, Firefox ESR < 102.11, and Thunderbird < 102.11. The Mozilla Foundation Security Advisory describes this flaw as: In multiple cases browser prompts could have been obscured by popups controlled by content. These could have led to potential user confusion and spoofing attacks. • https://bugzilla.mozilla.org/show_bug.cgi?id=1753339 • CWE-451: User Interface (UI) Misrepresentation of Critical Information •

CVSS: 7.8EPSS: 0%CPEs: 3EXPL: 0

11 May 2023 — An out-of-bound read could have led to a crash in the RLBox Expat driver. This vulnerability affects Firefox < 113, Firefox ESR < 102.11, and Thunderbird < 102.11. The Mozilla Foundation Security Advisory describes this flaw as: An out-of-bound read could have led to a crash in the RLBox Expat driver. USN-6074-1 fixed vulnerabilities and USN-6074-2 fixed minor regressions in Firefox. The update introduced several minor regressions. • https://bugzilla.mozilla.org/show_bug.cgi?id=1824892 • CWE-125: Out-of-bounds Read •