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

20 Feb 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: 10.0EPSS: 0%CPEs: 1EXPL: 0

20 Feb 2023 — Due to URL previews in the network panel of developer tools improperly storing URLs, query parameters could potentially be used to overwrite global objects in privileged code. This vulnerability affects Firefox < 110. Christian Holler discovered that Firefox did not properly manage memory when using PKCS 12 Safe Bag attributes. An attacker could construct a PKCS 12 cert bundle in such a way that could allow for arbitrary memory writes. Johan Carlsson discovered that Firefox did not properly manage child ifr... • https://bugzilla.mozilla.org/show_bug.cgi?id=1801542 • CWE-1284: Improper Validation of Specified Quantity in Input •

CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 0

20 Feb 2023 — 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. USN-5880-1 fixed vulnerabilities in Firefox. The update introduced several minor regressions. This update fixes the problem. • https://bugzilla.mozilla.org/show_bug.cgi?id=1808632 • CWE-252: Unchecked Return Value •

CVSS: 10.0EPSS: 0%CPEs: 1EXPL: 0

20 Feb 2023 — An invalid downcast from `nsHTMLDocument` to `nsIContent` could have lead to undefined behavior. This vulnerability affects Firefox < 110. Christian Holler discovered that Firefox did not properly manage memory when using PKCS 12 Safe Bag attributes. An attacker could construct a PKCS 12 cert bundle in such a way that could allow for arbitrary memory writes. Johan Carlsson discovered that Firefox did not properly manage child iframe's unredacted URI when using Content-Security-Policy-Report-Only header. • https://bugzilla.mozilla.org/show_bug.cgi?id=1811331 •

CVSS: 10.0EPSS: 0%CPEs: 2EXPL: 0

16 Feb 2023 — Mmemory safety bugs present in Firefox 109 and Firefox ESR 102.7. 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 < 110 and Firefox ESR < 102.8. The Mozilla Foundation Security Advisory describes this flaw as: Mozilla developers Kershaw Chang and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 109 and Firefox ESR 102.7. Some of these bugs sh... • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1789449%2C1803628%2C1810536 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •

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

16 Feb 2023 — Permission prompts for opening external schemes were only shown for ContentPrincipals resulting in extensions being able to open them without user interaction via ExpandedPrincipals. This could lead to further malicious actions such as downloading files or interacting with software already installed on the system. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8. The Mozilla Foundation Security Advisory describes this flaw as: Permission prompt... • https://bugzilla.mozilla.org/show_bug.cgi?id=1792138 • CWE-84: Improper Neutralization of Encoded URI Schemes in a Web Page CWE-863: Incorrect Authorization •

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

16 Feb 2023 — Cross-compartment wrappers wrapping a scripted proxy could have caused objects from other compartments to be stored in the main compartment resulting in a use-after-free after unwrapping the proxy. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8. The Mozilla Foundation Security Advisory describes this flaw as: Cross-compartment wrappers wrapping a scripted proxy could have caused objects from other compartments to be stored in the main compartment resulting in a use-af... • https://bugzilla.mozilla.org/show_bug.cgi?id=1810711 • CWE-416: Use After Free •

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

16 Feb 2023 — An attacker could construct a PKCS 12 cert bundle in such a way that could allow for arbitrary memory writes via PKCS 12 Safe Bag attributes being mishandled. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8. The Mozilla Foundation Security Advisory describes this flaw as: An attacker could construct a PKCS 12 cert bundle in such a way that could allow for arbitrary memory writes via PKCS 12 Safe Bag attributes being mishandled. USN-5880-1 fixed vulnerabilities in Firef... • https://alas.aws.amazon.com/AL2/ALAS-2023-1992.html • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

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

16 Feb 2023 — Module load requests that failed were not being checked as to whether or not they were cancelled causing a use-after-free in ScriptLoadContext. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8. The Mozilla Foundation Security Advisory describes this flaw as: Module load requests that failed were not being checked as to whether or not they were cancelled causing a use-after-free in `ScriptLoadContext`. USN-5880-1 fixed vulnerabilities in Firefox. The update ... • https://bugzilla.mozilla.org/show_bug.cgi?id=1811939 • CWE-416: Use After Free •

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

16 Feb 2023 — An invalid downcast from <code>nsTextNode</code> to <code>SVGElement</code> could have lead to undefined behavior. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8. The Mozilla Foundation Security Advisory describes this flaw as: An invalid downcast from `nsTextNode` to `SVGElement` could have lead to undefined behavior. An update that fixes 14 vulnerabilities is now available. This update for MozillaFirefox fixes the following issues. • https://bugzilla.mozilla.org/show_bug.cgi?id=1811464 • CWE-704: Incorrect Type Conversion or Cast •