QID 671071

Openldap is an open-source suite of lightweight directory access protocol (ldap) applications and development tools.
Ldap is a set of protocols used to access and maintain distributed directory information services over an ip network.
The openldap packages contain configuration files, libraries, and documentation for openldap.
Security fix(es): an issue was discovered in openldap 2.x before 2.4.48.
When using sasl authentication and session encryption, and relying on the sasl security layers in slapd access controls, it is possible to obtain access that would otherwise be denied via a simple bind for any identity covered in those acls.
After the first sasl bind is completed, the sasl_ssf value is retained for all new non-sasl connections.
Depending on the acl configuration, this can affect different types of operations (searches, modifications, etc.).
In other words, a successful authorization step completed by one user affects the authorization requirement for a different user.(cve-2019-13565) an issue was discovered in the server in openldap before 2.4.48.
When the server administrator delegates rootdn (database admin) privileges for certain databases but wants to maintain isolation (e.g., for multi-tenant deployments), slapd does not properly stop a rootdn from requesting authorization as an identity from another database during a sasl bind or with a proxyauthz (rfc 4370) control. (
It is not a common configuration to deploy a system where the server administrator and a db administrator enjoy different levels of trust.)(cve-2019-13057)

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

An arbitrary attacker may exploit this vulnerability to compromise the system.