By injecting a cookie with certain special characters, an attacker on a shared subdomain which is not a secure context could set and thus overwrite cookies from a secure context, leading to session fixation and other attacks. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
| Link | Tags |
|---|---|
| https://www.mozilla.org/security/advisories/mfsa2022-40/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2022-41/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2022-42/ | vendor advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1779993 | issue tracking permissions required |