CVE-2019-13565: Apple Mac OS X

High severity, CVSS 7.5. EPSS: 5% chance of exploitation in the next 30 days.

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.

Affected products

• Apple Mac OS X: from 10.13, before 10.13.6 (fixed in 10.13.6); from 10.14, before 10.14.6 (fixed in 10.14.6); from 10.15, before 10.15.2 (fixed in 10.15.2); version 10.13.6 only; version 10.14.6 only
• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 16.04 only; version 18.04 only; version 19.04 only
• Debian Debian Linux: version 8.0 only
• F5 Traffix Signaling Delivery Controller: version 5.0.0 only; version 5.1.0 only
• Openldap Openldap: from 2.0, up to and including 2.4.47
• Opensuse Leap: version 15.0 only; version 15.1 only
• Oracle Blockchain Platform: before 21.1.2 (fixed in 21.1.2)
• Oracle Solaris: version 11 only
• Oracle ZFS Storage Appliance Kit: version 8.8 only

Published 2019-07-26. Last modified 2026-06-17.