CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS
Percentile
46.3%
If a Jetty OpenIdAuthenticator
uses the optional nested LoginService
, and that LoginService
decides to revoke an already authenticated user, then the current request will still treat the user as authenticated. The authentication is then cleared from the session and subsequent requests will not be treated as authenticated.
So a request on a previously authenticated session could be allowed to bypass authentication after it had been rejected by the LoginService
.
This impacts usages of the jetty-openid which have configured a nested LoginService
and where that LoginService
will is capable of rejecting previously authenticated users.
> working on a custom OpenIdAuthenticator, I discovered the following:
>
> https://github.com/eclipse/jetty.project/blob/jetty-10.0.14/jetty-openid/src/main/java/org/eclipse/jetty/security/openid/OpenIdAuthenticator.java#L505
>
> In the case where the LoginService does return that the authentication has been revoked (from the validate() call on line 463), the OpenIdAuthenticator removes the authentication from the session; however the current request still proceeds as if authenticated, since it falls through to “return authentication” on line 505.
>
> This is fixed by moving the line 505 (and associated debug log) inside the else block that ends on line 502, instead of outside it. Then the revocation case will run through to line 517 and will trigger a new OpenId authentication which I think is correct.
>
> I think this revocation can only occur if you do attach a separate LoginService to the OpenIdLoginService, but in that case the revoked authentication will still let the next request through (and possibly more than one if they are very close to simultaneous).
>
> Technically I think this is a security vulnerability, if a very minor one, so I’m sending this off-list.
Fixed in Jetty Versions:
Upgrade your version of Jetty.
Vendor | Product | Version | CPE |
---|---|---|---|
org.eclipse.jetty | jetty-openid | * | cpe:2.3:a:org.eclipse.jetty:jetty-openid:*:*:*:*:*:*:*:* |
github.com/advisories/GHSA-pwh8-58vv-vw48
github.com/eclipse/jetty.project/pull/9528
github.com/eclipse/jetty.project/pull/9660
github.com/eclipse/jetty.project/security/advisories/GHSA-pwh8-58vv-vw48
nvd.nist.gov/vuln/detail/CVE-2023-41900
security.netapp.com/advisory/ntap-20231110-0004
www.debian.org/security/2023/dsa-5507