A nested iframe, triggering a cross-site navigation, could send SameSite=Strict or Lax cookies. This vulnerability affects Firefox < 128 and Thunderbird < 128.
Weakness
The SameSite attribute for sensitive cookies is not set, or an insecure value is used.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firefox | Mozilla | * | 128.0 (excluding) |
| Thunderbird | Mozilla | * | 128.0 (excluding) |
| Firefox | Ubuntu | focal | * |
| Mozjs102 | Ubuntu | devel | * |
| Mozjs102 | Ubuntu | esm-apps/noble | * |
| Mozjs102 | Ubuntu | jammy | * |
| Mozjs102 | Ubuntu | mantic | * |
| Mozjs102 | Ubuntu | noble | * |
| Mozjs102 | Ubuntu | upstream | * |
| Mozjs38 | Ubuntu | esm-apps/bionic | * |
| Mozjs38 | Ubuntu | upstream | * |
| Mozjs52 | Ubuntu | esm-apps/focal | * |
| Mozjs52 | Ubuntu | esm-infra/bionic | * |
| Mozjs52 | Ubuntu | focal | * |
| Mozjs52 | Ubuntu | upstream | * |
| Mozjs68 | Ubuntu | esm-infra/focal | * |
| Mozjs68 | Ubuntu | focal | * |
| Mozjs68 | Ubuntu | upstream | * |
| Mozjs78 | Ubuntu | esm-apps/jammy | * |
| Mozjs78 | Ubuntu | jammy | * |
| Mozjs78 | Ubuntu | upstream | * |
| Mozjs91 | Ubuntu | jammy | * |
| Mozjs91 | Ubuntu | upstream | * |
| Thunderbird | Ubuntu | mantic | * |
Potential Mitigations
Related Attack Patterns
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1844827
- https://www.mozilla.org/security/advisories/mfsa2024-29/
- https://www.mozilla.org/security/advisories/mfsa2024-32/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1844827
- https://www.mozilla.org/security/advisories/mfsa2024-29/
- https://www.mozilla.org/security/advisories/mfsa2024-32/