CVE-2022-34478: Medium severity firefox esr vulnerability
The ms-msdt, search, and search-ms protocols deliver content to Microsoft applications, bypassing the browser, when a user accepts a prompt. These applications have had known vulnerabilities, exploited in the wild (although we know of none exploited through Firefox), so in this release Firefox has blocked these protocols from prompting the user to open them.This bug only affects Firefox on Windows. Other operating systems are unaffected.
Other sources
The ms-msdt, search, and search-ms protocols deliver content to Microsoft applications, bypassing the browser, when a user accepts a prompt. These applications have had known vulnerabilities, exploited in the wild (although we know of none exploited through Thunderbird), so in this release Thunderbird has blocked these protocols from prompting the user to open them.This bug only affects Thunderbird on Windows. Other operating systems are unaffected.
— Mozilla
The <code>ms-msdt</code>, <code>search</code>, and <code>search-ms</code> protocols deliver content to Microsoft applications, bypassing the browser, when a user accepts a prompt. These applications have had known vulnerabilities, exploited in the wild (although we know of none exploited through Thunderbird), so in this release Thunderbird has blocked these protocols from prompting the user to open them.<br>This bug only affects Thunderbird on Windows. Other operating systems are unaffected.. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.
Affected Software
Event History
Parent advisories
This vulnerability appears in the following advisories.
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
What is the severity of CVE-2022-34478?
CVE-2022-34478 has been classified as a moderate severity vulnerability due to its potential to allow content exploitation in certain contexts.
How do I fix CVE-2022-34478?
To mitigate CVE-2022-34478, users should update their Mozilla Firefox or Thunderbird software to versions 91.11 or 102, respectively.
What applications are affected by CVE-2022-34478?
CVE-2022-34478 affects Mozilla Firefox ESR, Thunderbird, and regular Mozilla Firefox versions prior to 102.0.
Are there any known exploits for CVE-2022-34478?
As of now, there are no confirmed exploits for CVE-2022-34478 through Firefox, although other applications may be vulnerable.
What protocols are involved in CVE-2022-34478?
CVE-2022-34478 involves the ms-msdt, search, and search-ms protocols which can bypass browser security.