Description
Fedify is a TypeScript library for building federated server apps powered by ActivityPub. Prior to versions 1.9.11, 1.10.10, 2.0.18, 2.1.14, and 2.2.3, an attacker can make use of JSON-LD features to restructure a JSON-LD document that would change how Fedify interprets it without changing its Linked Data Signature, allowing them to alter a third-party signed activity they have received. Versions 1.9.11, 1.10.10, 2.0.18, 2.1.14, and 2.2.3 fix the issue.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
Low
Affected products
- fedify-dev / fedify>= 2.2.0, < 2.2.3 – >= 2.2.0, < 2.2.3
- fedify-dev / fedify>= 2.1.0, < 2.1.14 – >= 2.1.0, < 2.1.14
- fedify-dev / fedify>= 2.0.0, < 2.0.18 – >= 2.0.0, < 2.0.18
- fedify-dev / fedify>= 1.10.0, < 1.10.10 – >= 1.10.0, < 1.10.10
- fedify-dev / fedify< 1.9.11 – < 1.9.11