CVE-2019-13565

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

Show unmaintained releases

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	Fixed 2.4.31-1+nmu2ubuntu8.5+esm1 Ubuntu Pro

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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	Upstream: http://www.openldap.org/devel/gitweb.cgi?p=openldap.git;a=commit;h=744a46a1acb93798f4e027290191d6a11dd4c18c

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

CVE-2019-13565

Cvss 3 Severity Score

Status

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Patch details

Severity score breakdown

References

Related Ubuntu Security Notices (USN)

Other references