CVE-2019-13565
Published: 26 July 2019
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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
openldap Launchpad, Ubuntu, Debian |
upstream |
Released
(2.4.48+dfsg-1)
|
| trusty |
Released
(2.4.31-1+nmu2ubuntu8.5+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| xenial |
Released
(2.4.42+dfsg-2ubuntu3.6)
|
|
| bionic |
Released
(2.4.45+dfsg-1ubuntu1.3)
|
|
| disco |
Released
(2.4.47+dfsg-3ubuntu2.1)
|
|
|
Patches: upstream: http://www.openldap.org/devel/gitweb.cgi?p=openldap.git;a=commit;h=744a46a1acb93798f4e027290191d6a11dd4c18c |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| 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 |