Shodan
Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2021-44878

If an OpenID Connect provider supports the "none" algorithm (i.e., tokens with no signature), pac4j v5.3.0 (and prior) does not refuse it without an explicit configuration on its side or for the "idtoken" response type which is not secure and violates the OpenID Core Specification. The "none" algorithm does not require any signature verification when validating the ID tokens, which allows the attacker to bypass the token validation by injecting a malformed ID token using "none" as the value of "alg" key in the header with an empty signature value.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 3.3%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
Products affected by CVE-2021-44878
  • Pac4j » Pac4j » Version: Any
    cpe:2.3:a:pac4j:pac4j:*
  • Pac4j » Pac4j » Version: 1.4.0
    cpe:2.3:a:pac4j:pac4j:1.4.0
  • Pac4j » Pac4j » Version: 1.4.1
    cpe:2.3:a:pac4j:pac4j:1.4.1
  • Pac4j » Pac4j » Version: 1.5.0
    cpe:2.3:a:pac4j:pac4j:1.5.0
  • Pac4j » Pac4j » Version: 1.5.1
    cpe:2.3:a:pac4j:pac4j:1.5.1
  • Pac4j » Pac4j » Version: 1.6.0
    cpe:2.3:a:pac4j:pac4j:1.6.0
  • Pac4j » Pac4j » Version: 1.7.0
    cpe:2.3:a:pac4j:pac4j:1.7.0
  • Pac4j » Pac4j » Version: 1.7.1
    cpe:2.3:a:pac4j:pac4j:1.7.1
  • Pac4j » Pac4j » Version: 1.7.2
    cpe:2.3:a:pac4j:pac4j:1.7.2
  • Pac4j » Pac4j » Version: 1.8.0
    cpe:2.3:a:pac4j:pac4j:1.8.0
  • Pac4j » Pac4j » Version: 1.8.1
    cpe:2.3:a:pac4j:pac4j:1.8.1
  • Pac4j » Pac4j » Version: 1.8.2
    cpe:2.3:a:pac4j:pac4j:1.8.2
  • Pac4j » Pac4j » Version: 1.8.3
    cpe:2.3:a:pac4j:pac4j:1.8.3
  • Pac4j » Pac4j » Version: 1.8.4
    cpe:2.3:a:pac4j:pac4j:1.8.4
  • Pac4j » Pac4j » Version: 1.8.5
    cpe:2.3:a:pac4j:pac4j:1.8.5
  • Pac4j » Pac4j » Version: 1.8.6
    cpe:2.3:a:pac4j:pac4j:1.8.6
  • Pac4j » Pac4j » Version: 1.8.7
    cpe:2.3:a:pac4j:pac4j:1.8.7
  • Pac4j » Pac4j » Version: 1.8.8
    cpe:2.3:a:pac4j:pac4j:1.8.8
  • Pac4j » Pac4j » Version: 1.8.9
    cpe:2.3:a:pac4j:pac4j:1.8.9
  • Pac4j » Pac4j » Version: 1.9.0
    cpe:2.3:a:pac4j:pac4j:1.9.0
  • Pac4j » Pac4j » Version: 1.9.1
    cpe:2.3:a:pac4j:pac4j:1.9.1
  • Pac4j » Pac4j » Version: 1.9.2
    cpe:2.3:a:pac4j:pac4j:1.9.2
  • Pac4j » Pac4j » Version: 1.9.3
    cpe:2.3:a:pac4j:pac4j:1.9.3
  • Pac4j » Pac4j » Version: 1.9.4
    cpe:2.3:a:pac4j:pac4j:1.9.4
  • Pac4j » Pac4j » Version: 1.9.5
    cpe:2.3:a:pac4j:pac4j:1.9.5
  • Pac4j » Pac4j » Version: 1.9.6
    cpe:2.3:a:pac4j:pac4j:1.9.6
  • Pac4j » Pac4j » Version: 1.9.7
    cpe:2.3:a:pac4j:pac4j:1.9.7
  • Pac4j » Pac4j » Version: 1.9.8
    cpe:2.3:a:pac4j:pac4j:1.9.8
  • Pac4j » Pac4j » Version: 1.9.9
    cpe:2.3:a:pac4j:pac4j:1.9.9
  • Pac4j » Pac4j » Version: 2.0.0
    cpe:2.3:a:pac4j:pac4j:2.0.0
  • Pac4j » Pac4j » Version: 2.1.0
    cpe:2.3:a:pac4j:pac4j:2.1.0
  • Pac4j » Pac4j » Version: 2.2.0
    cpe:2.3:a:pac4j:pac4j:2.2.0
  • Pac4j » Pac4j » Version: 2.2.1
    cpe:2.3:a:pac4j:pac4j:2.2.1
  • Pac4j » Pac4j » Version: 2.3.0
    cpe:2.3:a:pac4j:pac4j:2.3.0
  • Pac4j » Pac4j » Version: 2.3.1
    cpe:2.3:a:pac4j:pac4j:2.3.1
  • Pac4j » Pac4j » Version: 3.0.0
    cpe:2.3:a:pac4j:pac4j:3.0.0
  • Pac4j » Pac4j » Version: 3.0.1
    cpe:2.3:a:pac4j:pac4j:3.0.1
  • Pac4j » Pac4j » Version: 3.0.2
    cpe:2.3:a:pac4j:pac4j:3.0.2
  • Pac4j » Pac4j » Version: 3.1.0
    cpe:2.3:a:pac4j:pac4j:3.1.0
  • Pac4j » Pac4j » Version: 3.2.0
    cpe:2.3:a:pac4j:pac4j:3.2.0
  • Pac4j » Pac4j » Version: 3.3.0
    cpe:2.3:a:pac4j:pac4j:3.3.0
  • Pac4j » Pac4j » Version: 3.4.0
    cpe:2.3:a:pac4j:pac4j:3.4.0
  • Pac4j » Pac4j » Version: 3.5.0
    cpe:2.3:a:pac4j:pac4j:3.5.0
  • Pac4j » Pac4j » Version: 3.6.0
    cpe:2.3:a:pac4j:pac4j:3.6.0
  • Pac4j » Pac4j » Version: 3.6.1
    cpe:2.3:a:pac4j:pac4j:3.6.1
  • Pac4j » Pac4j » Version: 3.7.0
    cpe:2.3:a:pac4j:pac4j:3.7.0
  • Pac4j » Pac4j » Version: 3.8.0
    cpe:2.3:a:pac4j:pac4j:3.8.0
  • Pac4j » Pac4j » Version: 3.8.1
    cpe:2.3:a:pac4j:pac4j:3.8.1
  • Pac4j » Pac4j » Version: 3.8.2
    cpe:2.3:a:pac4j:pac4j:3.8.2


Products
Pricing
Contact Us

Shodan ® - All rights reserved