CVE-2018-1393

Vulnerability

The vulnerability exists in the web services component of IBM Financial Transaction Manager (FTM) for ACH Services for Multi-Platform version 3.0.6 [1]. An authenticated user can execute a specially crafted command that leads to the disclosure of sensitive information. The issue is related to HTTP header logging security and requires the attacker to have low-privilege access to the affected system.

Exploitation

An attacker with network access and valid low-privilege credentials can exploit this vulnerability by sending a specially crafted command to the web services endpoint. The attack complexity is high, but no user interaction is required. The specific command triggers improper handling of HTTP headers, resulting in information leakage [1].

Impact

Successful exploitation allows the attacker to obtain sensitive information from the affected system. The confidentiality impact is limited (low), with no impact on integrity or availability. The attacker gains access to data that should not be exposed, potentially aiding further attacks.

Mitigation

IBM has released a fix for this vulnerability as APAR PI93293. Users are advised to upgrade to the appropriate fixed version or apply the interim fix as described in the IBM Security Bulletin [1]. Workarounds are dependent on specific infrastructure configurations, and no alternative mitigations are provided.