Affected: Mozilla Firefox, Mozilla Firefox ESR, Mozilla Thunderbird

If an object prototype was corrupted by an attacker, they would have been able to set undesired attributes on a JavaScript object, leading to privileged code execution. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.

Affected: Ubuntu:18.04:LTS: firefox, Ubuntu:20.04:LTS: firefox

Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, spoof the browser UI, bypass CSP restrictions, bypass sandboxed iframe restrictions, obtain sensitive information, bypass the HTML sanitizer, or execute arbitrary code. (CVE-2022-2200, CVE-2022-34468, CVE-2022-34470, CVE-2022-34473, CVE-2022-34474, CVE-2022-34475, CVE-2022-34476, CVE-2022-34477, CVE-2022-34479, CVE-2022-34480, CVE-2022-34481, CVE-2022-34484, CVE-2022-34485)

It was discovered that Firefox could be made to save an image with an executable extension in the filename when dragging and dropping an image in some circumstances. If a user were tricked into dragging and dropping a specially crafted image, an attacker could potentially exploit this to trick the user into executing arbitrary code. (CVE-2022-34482, CVE-2022-34483)

It was discovered that a compromised server could trick Firefox into an addon downgrade in some circumstances. An attacker could potentially exploit this to trick the browser into downgrading an addon to a prior version. (CVE-2022-34471)

It was discovered that an unavailable PAC file caused OCSP requests to be blocked, resulting in incorrect error pages being displayed. (CVE-2022-34472)