GHSA-xmh9-rg6f-j3mr – @solid/identity-token-verifier

Package

Manager: npm
Name: @solid/identity-token-verifier
Vulnerable Version: >=0 <0.5.2

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:U/RC:C

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS: N/A pctlN/A

Details

Verification flaw in Solid identity-token-verifier ### Impact #### Severity Any Pod on a Solid server using a vulnerable version of the identity-token-verifier library is at risk of a spoofed Demonstration of Proof-of-Possession (DPoP) token binding. This vulnerability could give total and complete access to a targeted Pod. #### Summary A verification flaw in the implementation of the identity token verifier library (https://github.com/solid/identity-token-verifier) allows DPoP proofs to be spoofed. DPoP proofs are used to bind access tokens to a private key meant to be in sole possession of a specific user. Instead of verifying against the hash of an embedded public key, the library instead verifies against a field that an attacker can modify to spoof another user’s DPoP. A stolen DPoP proof, when used in the right context, therefore allows the rebinding of a DPoP-bound access token. Any attacker in possession of a targeted access token could build an attack environment to replay it on any Pod service with this vulnerability. ### Patches A new version 0.5.2 of identity-token-verifier fixes the verification: https://github.com/solid/identity-token-verifier/blob/7e18d86d65ee681e8ae912b6a032a1bae3cae570/src/lib/DPoP.ts#L25-L35 ### Workarounds None ### References _Are there any links users can visit to find out more?_ ### For more information If you have any questions or comments about this advisory: * Open an issue in the [identity-token-verifier](https://github.com/solid/identity-token-verifier/) repository. * Email: info@solidproject.org

Metadata

Created: 2021-03-12T22:39:01Z
Modified: 2021-03-10T04:01:48Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/03/GHSA-xmh9-rg6f-j3mr/GHSA-xmh9-rg6f-j3mr.json
CWE IDs: ["CWE-290"]
Alternative ID: N/A
Finding: F032
Auto approve: 1