Description
It was possible for a web extension with minimal permissions to create a `StreamFilter` which could be used to read and modify the response body of requests on any site. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, Firefox ESR < 128.1, Thunderbird < 128.1, and Thunderbird < 115.14.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected products
- Mozilla / Firefoxunspecified – 129
- Mozilla / Firefox ESRunspecified – 115.14
- Mozilla / Firefox ESRunspecified – 128.1
- Mozilla / Thunderbirdunspecified – 128.1
- Mozilla / Thunderbirdunspecified – 115.14
References
- MISChttps://bugzilla.mozilla.org/show_bug.cgi?id=1909298
- VENDOR_ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2024-33/
- VENDOR_ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2024-34/
- VENDOR_ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2024-35/
- VENDOR_ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2024-37/
- VENDOR_ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2024-38/