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

16 Mar 2023 — Memory safety bugs present in Firefox 110 and Firefox ESR 102.8. 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 < 111, Firefox ESR < 102.9, and Thunderbird < 102.9. A flaw was found in Mozilla. The Mozilla Foundation Security Advisory described the issue in which Mozilla developers Timothy Nikkel, Andrew McCreight, and the Mozilla Fuzzing Team reported memory safe... • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1808352%2C1811637%2C1815904%2C1817442%2C1818674 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •

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: 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: 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 — When encoding data from an inputStream in xpcom the size of the input being encoded was not correctly calculated potentially leading to an out of bounds memory write. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8. The Mozilla Foundation Security Advisory describes this flaw as: When encoding data from an `inputStream` in `xpcom` the size of the input being encoded was not correctly calculated potentially leading to an out of bounds memory wr... • https://bugzilla.mozilla.org/show_bug.cgi?id=1804564 • CWE-787: Out-of-bounds Write •

CVSS: 6.4EPSS: 0%CPEs: 1EXPL: 1

16 Feb 2023 — Scanning a QR code that contained a javascript: URL would have resulted in the Javascript being executed. • https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2019-17003 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

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

16 Feb 2023 — When importing a SPKI RSA public key as ECDSA P-256, the key would be handled incorrectly causing the tab to crash. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8. The Mozilla Foundation Security Advisory describes this flaw as: When importing a SPKI RSA public key as ECDSA P-256, the key would be handled incorrectly causing the tab to crash. USN-5880-1 fixed vulnerabilities in Firefox. The update introduced several minor regressions. • https://bugzilla.mozilla.org/show_bug.cgi?id=1813424 • CWE-173: Improper Handling of Alternate Encoding •

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 — An invalid downcast from nsTextNode to SVGElement 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. Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an atta... • https://bugzilla.mozilla.org/show_bug.cgi?id=1811464 • CWE-704: Incorrect Type Conversion or Cast •