Fedify has an LD-Signature Bypass via JSON-LD Named-Graph Restructuring
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 2.2.3, 2.1.14, 2.0.18, 1.10.10, 1.9.11
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- fedify-dev fedify
From 2.2.0 · fixed in 2.2.3; From 2.1.0 · fixed in 2.1.14; From 2.0.0 · fixed in 2.0.18; From 1.10.0 · fixed in 1.10.10; fixed in 1.9.11
- @fedify/fedifynpm
From 2.2.0 · fixed in 2.2.3
- @fedify/fedifynpm
From 2.1.0 · fixed in 2.1.14
- @fedify/fedifynpm
From 2.0.0 · fixed in 2.0.18
- @fedify/fedifynpm
From 1.10.0 · fixed in 1.10.10
- @fedify/fedifynpm
fixed in 1.9.11