CVE Vulnerability

CVE-2020-5300

In Hydra (an OAuth2 Server and OpenID Certified™ OpenID Connect Provider written in Go), before version 1.4.0+oryOS.17, when using client authentication method 'private_key_jwt' [1], OpenId specification says the following about assertion `jti`: "A unique identifier for the token, which can be used to prevent reuse of the token. These tokens MUST only be used once, unless conditions for reuse were negotiated between the parties". Hydra does not check the uniqueness of this `jti` value. Exploiting this vulnerability is somewhat difficult because: - TLS protects against MITM which makes it difficult to intercept valid tokens for replay attacks - The expiry time of the JWT gives only a short window of opportunity where it could be replayed This has been patched in version v1.4.0+oryOS.17

3.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 6.8 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

5.3 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.6 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/ory/hydra/security/advisories/GHSA-3p3g-vpw6-4w66 Third Party Advisory
https://github.com/ory/hydra/commit/700d17d3b7d507de1b1d459a7261d6fb2571ebe3 Patch Third Party Advisory
https://github.com/ory/hydra/releases/tag/v1.4.0 Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:ory:hydra:*:*:*:*:*:*:*:*
Information

Published : 2020-04-06 05:15

Updated : 2020-04-07 01:52

NVD link : CVE-2020-5300

Mitre link : CVE-2020-5300

Products Affected
No products.
CWE
CWE-294

Authentication Bypass by Capture-replay