CVE-2019-13565

NameCVE-2019-13565
DescriptionAn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-1891-1
NVD severitymedium (attack range: remote)
Debian Bugs932998

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
openldap (PTS)jessie2.4.40+dfsg-1+deb8u4vulnerable
jessie (security)2.4.40+dfsg-1+deb8u5fixed
stretch2.4.44+dfsg-5+deb9u2vulnerable
buster2.4.47+dfsg-3vulnerable
bullseye, sid2.4.48+dfsg-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
openldapsource(unstable)2.4.48+dfsg-1low932998
openldapsourcejessie2.4.40+dfsg-1+deb8u5mediumDLA-1891-1

Notes

[buster] - openldap <no-dsa> (Minor issue)
[stretch] - openldap <no-dsa> (Minor issue)
https://openldap.org/its/?findid=9052

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