CVE-2019-13565

Publication date 26 July 2019

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

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.

Status

Package Ubuntu Release Status
openldap 19.04 disco
Fixed 2.4.47+dfsg-3ubuntu2.1
18.04 LTS bionic
Fixed 2.4.45+dfsg-1ubuntu1.3
16.04 LTS xenial
Fixed 2.4.42+dfsg-2ubuntu3.6
14.04 LTS trusty

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
openldap

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-4078-1
    • OpenLDAP vulnerabilities
    • 30 July 2019
    • USN-4078-2
    • OpenLDAP vulnerabilities
    • 19 August 2019

Other references