This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
Current Description
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.
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.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.
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OR
*cpe:2.3:a:openldap:openldap:*:*:*:*:*:*:*:* versions from (including) 2.0 up to (including) 2.4.48
OR
*cpe:2.3:a:openldap:openldap:*:*:*:*:*:*:*:* versions from (including) 2.0 up to (including) 2.4.47
Changed
CPE Configuration
OR
*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:*:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
OR
*cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:*:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
Removed
CVSS V3
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Added
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Changed
Reference Type
https://lists.debian.org/debian-lts-announce/2019/08/msg00024.html No Types Assigned
https://lists.debian.org/debian-lts-announce/2019/08/msg00024.html Third Party Advisory
Changed
Reference Type
https://usn.ubuntu.com/4078-2/ No Types Assigned
https://usn.ubuntu.com/4078-2/ Third Party Advisory
OR
*cpe:2.3:a:openldap:openldap:*:*:*:*:*:*:*:* versions from (including) 2.0 up to (including) 2.4.48
Added
CPE Configuration
OR
*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:*:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
Added
CVSS V2
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Added
CVSS V3
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Added
CWE
CWE-287
Changed
Reference Type
https://usn.ubuntu.com/4078-1/ No Types Assigned
https://usn.ubuntu.com/4078-1/ Third Party Advisory
Changed
Reference Type
https://www.openldap.org/its/index.cgi/?findid=9052 No Types Assigned