CVE-2019-13565

high

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.

References

https://www.openldap.org/lists/openldap-announce/201907/msg00001.html

https://www.openldap.org/its/index.cgi/?findid=9052

https://usn.ubuntu.com/4078-1/

https://lists.debian.org/debian-lts-announce/2019/08/msg00024.html

https://usn.ubuntu.com/4078-2/

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00053.html

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00058.html

https://support.f5.com/csp/article/K98008862?utm_source=f5support&utm_medium=RSS

https://support.apple.com/kb/HT210788

https://seclists.org/bugtraq/2019/Dec/23

http://seclists.org/fulldisclosure/2019/Dec/26

https://www.oracle.com/security-alerts/cpuapr2020.html

https://lists.apache.org/thread.html/[email protected]%3Cissues.bookkeeper.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cissues.bookkeeper.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cissues.bookkeeper.apache.org%3E

https://www.oracle.com/security-alerts/cpuapr2022.html

Details

Source: MITRE

Published: 2019-07-26

Updated: 2022-06-13

Risk Information

CVSS v2

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH