SB2021011405 - Authorization bypass in OpenLDAP in Juniper Junos OS
Published: January 14, 2021
Security Bulletin ID
SB2021011405
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Authorization (CVE-ID: CVE-2019-13565)
CWE-ID: CWE-285 - Improper Authorization
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to escalate privileges.
The vulnerability exists due to incorrect processing of SASL authentication and session encryption in OpenLDAP. After the first SASL bind is completed, the sasl_ssf value is retained for all new non-SASL connections, allowing to bypass ACLs and obtain access by performing simple binds.
Remediation
Install update from vendor's website.