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CVE-2019-13057

Status Candidate

Overview

An issue was discovered in the server in OpenLDAP before 2.4.48. When the server administrator delegates rootDN (database admin) privileges for certain databases but wants to maintain isolation (e.g., for multi-tenant deployments), slapd does not properly stop a rootDN from requesting authorization as an identity from another database during a SASL bind or with a proxyAuthz (RFC 4370) control. (It is not a common configuration to deploy a system where the server administrator and a DB administrator enjoy different levels of trust.)

Related Files

Ubuntu Security Notice USN-4078-2
Posted Aug 19, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4078-2 - USN-4078-1 fixed several vulnerabilities in openldap. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. It was discovered that OpenLDAP incorrectly handled rootDN delegation. A database administrator could use this issue to request authorization as an identity from another database, contrary to expectations. Various other issues were also addressed.

tags | advisory, vulnerability
systems | linux, ubuntu
advisories | CVE-2019-13057, CVE-2019-13565
SHA-256 | 7d4b0832aac4f76717f228925ab0a0a651d2a6fd1abd5aa3f1e3e4e2377899cb
Ubuntu Security Notice USN-4078-1
Posted Jul 30, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4078-1 - It was discovered that OpenLDAP incorrectly handled rootDN delegation. A database administrator could use this issue to request authorization as an identity from another database, contrary to expectations. It was discovered that OpenLDAP incorrectly handled SASL authentication and session encryption. After a first SASL bind was completed, it was possible to obtain access by performing simple binds, contrary to expectations. Various other issues were also addressed.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2019-13057, CVE-2019-13565
SHA-256 | e76b3ae3dfb03368b6ba14be1bfefda880df6bd874f922dfbf9d22f342d6523c
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