What’s Vulnerable › Vulnerabilities

CVE-2019-13565

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-07-26 · updated 2026-10-14

Description

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

• macOS: from 10.13 before 10.13.6; from 10.14 before 10.14.6; from 10.15 before 10.15.2; 10.13.6, 10.13.6-security_update_2018-002, 10.13.6-security_update_2018-003, 10.13.6-security_update_2019-001, 10.13.6-security_update_2019-002, 10.13.6-security_update_2019-003 (+5) — fixed in 10.13.6, 10.14.6, 10.15.2
• Canonical Ubuntu Linux: 12.04, 14.04, 16.04, 18.04, 19.04
• Debian Linux: 8.0
• F5 Traffix SDC: 5.0.0, 5.1.0
• openldap: from 2.0 through 2.4.47
• openSUSE Leap: 15.0, 15.1
• Oracle Blockchain Platform: before 21.1.2 — fixed in 21.1.2
• Oracle Corporation Solaris Operating System: 11
• Oracle Corporation Oracle ZFS Storage Appliance Kit: 8.8

How to fix

Upgrade to a fixed version: macOS 10.13.6, 10.14.6, 10.15.2; Oracle Blockchain Platform 21.1.2. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00053.html
• http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00058.html
• http://seclists.org/fulldisclosure/2019/Dec/26
• https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E
• https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
• https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
• https://lists.debian.org/debian-lts-announce/2019/08/msg00024.html
• https://seclists.org/bugtraq/2019/Dec/23
• https://support.apple.com/kb/HT210788
• https://support.f5.com/csp/article/K98008862?utm_source=f5support&amp%3Butm_medium=RSS
• https://usn.ubuntu.com/4078-1/
• https://usn.ubuntu.com/4078-2/

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