An authentication bypass vulnerability exists libcurl <8.0.0 in the connection reuse feature which can reuse previously established connections with incorrect user permissions due to a failure to check for changes in the CURLOPT_GSSAPI_DELEGATION option. This vulnerability affects krb5/kerberos/negotiate/GSSAPI transfers and could potentially result in unauthorized access to sensitive information. The safest option is to not reuse connections if the CURLOPT_GSSAPI_DELEGATION option has been changed.
The authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
| Link | Tags |
|---|---|
| https://hackerone.com/reports/1895135 | third party advisory exploit |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36NBD5YLJXXEDZLDGNFCERWRYJQ6LAQW/ | vendor advisory mailing list third party advisory |
| https://security.netapp.com/advisory/ntap-20230420-0010/ | third party advisory |
| https://lists.debian.org/debian-lts-announce/2023/04/msg00025.html | third party advisory mailing list |
| https://security.gentoo.org/glsa/202310-12 | third party advisory vendor advisory |