Debian LTS: DLA-1891-1: openldap security update

    Date18 Aug 2019
    CategoryDebian LTS
    725
    Posted ByLinuxSecurity Advisories
    Several security vulnerabilities were discovered in openldap, a server and tools to provide a standalone directory service. CVE-2019-13057
    
    Package        : openldap
    Version        : 2.4.40+dfsg-1+deb8u5
    CVE ID         : CVE-2019-13057 CVE-2019-13565
    Debian Bug     : 932997 932998
    
    Several security vulnerabilities were discovered in openldap, a server
    and tools to provide a standalone directory service.
    
    CVE-2019-13057
    
        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.)
    
    CVE-2019-13565
    
        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.
    
    For Debian 8 "Jessie", these problems have been fixed in version
    2.4.40+dfsg-1+deb8u5.
    
    We recommend that you upgrade your openldap packages.
    
    Further information about Debian LTS security advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://wiki.debian.org/LTS
    
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