EUVD-2025-18753CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3Description
IBM Spectrum Protect Server 8.1 through 8.1.26 could allow attacker to bypass authentication due to improper session authentication which can result in access to unauthorized resources.
Analysis
CVE-2025-3319 is an authentication bypass vulnerability in IBM Spectrum Protect Server versions 8.1 through 8.1.26 caused by improper session authentication mechanisms. This flaw allows unauthenticated network attackers to bypass authentication and gain unauthorized access to protected resources, potentially compromising backup and recovery infrastructure. With a CVSS score of 8.1 (High) and network-based attack vector, this vulnerability poses significant risk to organizations relying on Spectrum Protect for data protection.
Technical Context
IBM Spectrum Protect Server is a centralized backup and recovery platform (CPE: cpe:2.3:a:ibm:spectrum_protect:*:*:*:*:*:*:*:*). The vulnerability stems from CWE-306 (Missing Authentication for Critical Function), indicating that the session authentication handler fails to properly validate user credentials or session tokens before granting access to critical resources. The affected versions (8.1.x through 8.1.26) contain flawed session validation logic in the authentication layer, likely in the server's administrative or client communication interfaces. This is not a cryptographic weakness but rather a logic flaw where the application assumes authenticated status without proper verification, potentially allowing attackers to craft requests that bypass session checks entirely or reuse/forge session identifiers.
Affected Products
Spectrum Protect Server (8.1, 8.1.1 through 8.1.26); Spectrum Protect Server (8.1.27 and later)
Remediation
Upgrade IBM Spectrum Protect Server to version 8.1.27 or later; priority: Critical; details: Apply the latest patch from IBM's security update repository. Verify compatibility with current backup policies and client versions before deployment. Workaround: Network segmentation; priority: High (if patching delayed); details: Restrict network access to Spectrum Protect Server administrative interfaces to trusted networks only. Implement firewall rules limiting inbound connections to management ports (default: 1500-1501 for client communication, additional administrative ports). Workaround: Monitor session activity; priority: Medium; details: Enable verbose logging on session authentication attempts. Monitor for unusual session tokens, failed authentication patterns, or requests from unexpected sources. Check audit logs for unauthorized resource access. Detection: IDS/IPS signatures; priority: High; details: Deploy detection rules for anomalous session validation bypass attempts against Spectrum Protect ports. Coordinate with IBM security team for specific indicators of compromise.
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