Description
An attacker could, via a specially crafted multipart response, execute arbitrary JavaScript under the `resource://devtools` origin. This could allow them to access cross-origin JSON content. This access is limited to "same site" documents by the Site Isolation feature on desktop clients, but full cross-origin access is possible on Android versions. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Firefox ESR < 115.16, Thunderbird < 128.3, and Thunderbird < 131.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Mozilla Firefox
unspecified to < 131affected
Mozilla Firefox ESR
unspecified to < 128.3affected
Mozilla Firefox ESR
unspecified to < 115.16affected
Mozilla Thunderbird
unspecified to < 128.3affected
Mozilla Thunderbird
unspecified to < 131affected
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1918874 ↗
- https://www.mozilla.org/security/advisories/mfsa2024-46/ ↗
- https://www.mozilla.org/security/advisories/mfsa2024-47/ ↗
- https://www.mozilla.org/security/advisories/mfsa2024-48/ ↗
- https://www.mozilla.org/security/advisories/mfsa2024-49/ ↗
- https://www.mozilla.org/security/advisories/mfsa2024-50/ ↗
- https://lists.debian.org/debian-lts-announce/2024/10/msg00006.html ↗
- https://lists.debian.org/debian-lts-announce/2024/10/msg00004.html ↗