SB2025112015 - Red Hat Enterprise Linux 8 update for the idm:DL1 module
Published: November 20, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2025-59088)
The disclosed vulnerability allows a remote attacker to perform SSRF attacks.
The vulnerability exists due to insufficient validation of user-supplied input. If kdcproxy receives a request for a realm which does not have server addresses defined in its configuration, by default, it will query SRV records in the DNS zone matching the requested realm name. A remote attacker can probe internal network topology and firewall rules, perform port scanning, and exfiltrate data.
2) Resource exhaustion (CVE-ID: CVE-2025-59089)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can force the application into connecting to a specially crafted KDC server to trigger resource exhaustion and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.