CVE-2023-29550

The Mozilla Foundation Security Advisory describes this flaw as: Mozilla developers Andrew Osmond, Sebastian Hengst, Andrew McCreight, and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 111 and Firefox ESR 102.9. 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.

Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, bypass security restrictions, cross-site tracing, or execute arbitrary code. Paul Menzel discovered that Thunderbird did not properly validate OCSP revocation status of recipient certificates when sending S/Mime encrypted email. An attacker could potentially exploits this issue to perform spoofing attack.