Multiple serious vulnerabilities have been found in Thunderbird. Malicious users can exploit these vulnerabilities to cause a denial of service, bypass security restrictions execute arbitrary code, obtain sensitive information and spoof user interface.

Below is a complete list of vulnerabilities:

1. A use-after-free vulnerability in WebSockets can be exploited remotely to cause denial of service;
2. A use-after-free vulnerability related to re-computing layout for a marquee element during window resizing can be exploited remotely to cause denial of service;
3. A use-after-free vulnerability related to premature removing of a editor DOM node during tree traversal can be exploited remotely to cause denial of service;
4. A use-after-free vulnerability related to reading an image observer during frame reconstruction can be exploited remotely to cause denial of service;
5. A use-after-free vulnerability related to manipulating the DOM during the resize event of an image element can be exploited remotely to cause denial of service;
6. A buffer overflow vulnerability in Accessible Rich Internet Applications (ARIA) can be exploited remotely to cause denial of service;
7. A buffer overflow vulnerability related to image renderer attempting to paint non-displayable SVG elements can be exploited remotely to cause denial of service;
8. An out-of-bounds read vulnerability after applying style rules to pseudo-elements can be exploited possibly to cause denial of service or to obtain sensitive information;
9. An improper policy protections on pages with embedded iframes can be exploited remotely to obtain sensitive information;
10. An incorrect serving the files from a sub-path on the domain in the AppCache mechanism can be exploited remotely to bypass security restrictions;
11. A buffer overflow vulnerability related to viewing a certificate in the certificate manager can be exploited remotely to cause denial of service;
12. Multiple vulnerabilities in WindowsDllDetourPatcher can be exploited remotely to bypass security restrictions;
13. An unknown vulnerability in the data: protocol can be exploited remotely by creating a modal alert rendering over arbitrary domains following page navigation to spoof user interface;
14. An incorrect enforcement of content security policy (CSP) can be exploited with an unknown impact;
15. Multiple memory corruption vulnerabilities in Mozilla Thunderbird 52.2 can be exploited remotely to execute arbitrary code.

Technical details

Vulnerability (12) affects Windows operating systems. Other operating systems are not affected.

NB: These vulnerabilities do not have any public CVSS ratings, so rating can be changed by the time.

NB: At this moment Mozilla just reserved CVE numbers for this vulnerabilities. Information can be changed soon.

Mozilla Thunderbird versions earlier than 52.3

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