GSS delegation too eager connection reuse
libcurl would reuse a previously created connection even when the GSS delegation (`CURLOPT_GSSAPI_DELEGATION`) option had been changed that could have changed the user's permissions in a second transfer. libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. However, this GSS delegation setting was left out from the configuration match checks, making them match too easily, affecting krb5/kerberos/negotiate/GSSAPI transfers.
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Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2023-27536US | medium5.9 | — | ||
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… | ||||
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