Fedify has an Infinite loop and Blind SSRF found inside the Webfinger mechanism
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 1.0.14, 1.1.11, 1.2.11, 1.3.4
- 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: poc
- Automatable: no
- Technical impact: partial
Summary
Fedify is a TypeScript library for building federated server apps powered by ActivityPub and other standards. This vulnerability allows a user to maneuver the Webfinger mechanism to perform a GET request to any internal resource on any Host, Port, URL combination regardless of present security mechanisms, and forcing the victim’s server into an infinite loop causing Denial of Service. Moreover, this issue can also be maneuvered into performing a Blind SSRF attack. This vulnerability is fixed in 1.0.14, 1.1.11, 1.2.11, and 1.3.4.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: poc · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- dahlia fedify
fixed in 1.0.14; From 1.1.0 · fixed in 1.1.11; From 1.2.0 · fixed in 1.2.11; From 1.3.0 · fixed in 1.3.4
- @fedify/fedifynpm
From 1.0.13 · fixed in 1.0.14
- @fedify/fedifynpm
From 1.1.10 · fixed in 1.1.11
- @fedify/fedifynpm
From 1.2.10 · fixed in 1.2.11
- @fedify/fedifynpm
From 1.3.3 · fixed in 1.3.4