CVE-2024-22345: IBM TXSeries Information Disclosure Flaw

CVE-2024-22345 Overview

CVE-2024-22345 affects IBM TXSeries for Multiplatforms 8.2. The product transmits or stores authentication credentials using an insecure method. Attackers positioned on the network can intercept or retrieve these credentials without authentication or user interaction. IBM tracks this issue as X-Force ID 280192 and classifies it under CWE-522: Insufficiently Protected Credentials.

The flaw exposes confidentiality of authentication material used by TXSeries transaction processing components. Successful interception lets attackers reuse captured credentials to access protected services. The vulnerability does not directly modify data or disrupt service availability.

Critical Impact
Network-positioned attackers can capture or retrieve credentials transmitted or stored by IBM TXSeries for Multiplatforms 8.2, enabling downstream account compromise and lateral movement against transaction processing infrastructure.

Affected Products

IBM TXSeries for Multiplatforms 8.2
Deployments using default credential transmission or storage configuration
Integrations relying on TXSeries authentication for downstream services

Discovery Timeline

2024-05-14 - CVE-2024-22345 published to NVD
2025-01-14 - Last updated in NVD database

Technical Details for CVE-2024-22345

Vulnerability Analysis

The weakness falls under CWE-522: Insufficiently Protected Credentials. IBM TXSeries for Multiplatforms 8.2 handles authentication credentials with a method that does not provide adequate confidentiality controls. An attacker with network access to the communication path or storage location can recover credential material.

IBM TXSeries provides distributed Customer Information Control System (CICS) transaction processing on AIX, Linux, Solaris, and Windows. Components frequently exchange authentication tokens between client applications, region controllers, and back-end resource managers. When these tokens traverse the network using an insecure encoding or are persisted without strong protection, observation of the channel or filesystem yields usable credentials.

The issue is exploitable over the network without privileges and without user interaction, according to the published CVSS vector. Impact is restricted to confidentiality of authentication material rather than integrity or availability of the TXSeries runtime.

Root Cause

The root cause is the use of an insecure transmission or storage mechanism for credentials. This typically corresponds to one of: cleartext transport, reversible encoding such as Base64 without transport encryption, weak hashing, or storage in files readable by unprivileged accounts. IBM's advisory directs administrators to apply the fix referenced in the IBM Support Patch Information.

Attack Vector

An attacker reaches the vulnerable component over the network. Two primary paths apply. First, passive interception of TXSeries client-to-region or region-to-resource manager traffic recovers credentials in transit. Second, access to a host where TXSeries stores credential artifacts allows retrieval of the stored material. Captured credentials can then be replayed against TXSeries or other systems sharing the same authentication store.

No verified public proof-of-concept is available for CVE-2024-22345. Refer to the IBM X-Force Vulnerability #280192 advisory for additional technical context.

Detection Methods for CVE-2024-22345

Indicators of Compromise

Unexpected authentication attempts against TXSeries regions originating from hosts outside the documented client population.
Reuse of TXSeries service account credentials on systems that do not normally consume them.
Sniffing tools, packet captures, or unauthorized network taps present on segments carrying TXSeries traffic.
Read access to TXSeries configuration or credential files from accounts other than the TXSeries runtime owner.

Detection Strategies

Inspect TXSeries network flows for unencrypted authentication exchanges between clients, regions, and resource managers.
Audit filesystem permissions on TXSeries installation directories and credential stores for over-permissive access.
Correlate authentication failures and successes across TXSeries and downstream resource managers to identify replayed credentials.
Compare running TXSeries versions against the fixed release listed in the IBM advisory to identify exposed hosts.

Monitoring Recommendations

Forward TXSeries audit logs and host authentication logs to a centralized analytics platform for correlation.
Alert on logons by TXSeries service accounts from new source IP addresses or at unusual times.
Monitor for new processes opening TXSeries credential files, configuration directories, or libraries.
Track east-west network traffic between application tiers for plaintext credential patterns using TLS inspection where policy permits.

How to Mitigate CVE-2024-22345

Immediate Actions Required

Apply the fix referenced in the IBM Support Patch Information for TXSeries for Multiplatforms 8.2.
Rotate any credentials handled by affected TXSeries deployments, including service accounts and integration tokens.
Restrict network access to TXSeries components to defined client subnets using host firewalls or network ACLs.
Review TXSeries configuration and storage paths for credential artifacts and tighten filesystem permissions to the runtime account only.

Patch Information

IBM has published guidance and a remediation path for CVE-2024-22345. Administrators should follow the steps in the IBM Support Patch Information advisory and the corresponding IBM X-Force Vulnerability #280192 entry. Apply the update to all TXSeries 8.2 installations and verify version strings after deployment.

Workarounds

Enforce TLS on all TXSeries client, region, and resource manager communication channels until patching is complete.
Place TXSeries components on a dedicated, segmented network reachable only by authorized clients.
Disable or restrict any TXSeries listeners that are not required for production transaction processing.
Replace any reusable static credentials with short-lived tokens or integrate authentication with an enterprise identity provider where supported.

bash

# Example: restrict TXSeries credential file permissions on Linux/AIX
chown txseries:txseries /var/cics_regions/<region>/security/*
chmod 600 /var/cics_regions/<region>/security/*

# Example: limit network exposure of TXSeries listener ports
iptables -A INPUT -p tcp --dport 1435 -s 10.20.30.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 1435 -j DROP