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…

published January 6, 2022

CVSS
—
EPSS
1%
Percentile
59.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00895 · 59.1th percentile
Published
2022-01-06T12:52Z
EPSS history
Timeline
  • 06 JAN 12:52Z
    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…
    cvelistv5