CVE-2015-0133 in WebSphere Commerce
Summary
by MITRE
IBM WebSphere Commerce 7.0 Feature Pack 4 through 8 allows remote attackers to read arbitrary files and possibly obtain administrative privileges via an XML external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.
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Analysis
by VulDB Data Team • 05/01/2022
The vulnerability identified as CVE-2015-0133 represents a critical XML External Entity (XXE) flaw within IBM WebSphere Commerce versions 7.0 Feature Pack 4 through 8. This security weakness stems from the application's improper handling of XML input, specifically when processing external entity declarations and references within XML documents. The vulnerability falls under the CWE-611 category, which classifies it as an improper restriction of XML external entity reference, a well-documented weakness that has plagued numerous web applications and enterprise systems. The XXE vulnerability enables attackers to exploit the XML parser's behavior of resolving external entities, potentially leading to unauthorized data access and privilege escalation.
The technical exploitation of this vulnerability occurs when an attacker crafts malicious XML input containing external entity declarations that reference local files on the server or external resources. When the WebSphere Commerce application processes this malformed XML, the XML parser resolves the entity references, causing the system to read arbitrary files from the server's filesystem. This flaw can be particularly dangerous as it may allow attackers to access sensitive configuration files, database connection details, or even administrative credentials stored in accessible locations. The vulnerability's impact extends beyond simple file reading, as the attack vector can potentially be leveraged to escalate privileges and gain administrative control over the affected system.
From an operational perspective, this vulnerability presents a severe risk to organizations relying on IBM WebSphere Commerce for their e-commerce operations. The remote attack capability means that adversaries can exploit this weakness from anywhere on the network without requiring physical access to the system. The potential for data exfiltration is substantial, as attackers can access various system files, configuration data, and potentially user information stored within the commerce platform. The vulnerability's presence in multiple feature packs of WebSphere Commerce indicates a widespread impact across different versions, making it a particularly concerning issue for organizations that may have deployed various iterations of the platform. This XXE vulnerability aligns with ATT&CK technique T1566.001, which describes the use of malicious XML content to exploit input validation weaknesses in web applications.
Organizations facing this vulnerability should implement immediate mitigations to protect their systems from exploitation. The most effective approach involves disabling external entity resolution in XML parsers and implementing strict input validation for all XML processing components within the WebSphere Commerce environment. Security patches and updates from IBM should be applied immediately to address the root cause of the vulnerability. Additionally, network segmentation and firewall rules should be configured to restrict access to the commerce application's XML processing endpoints. The implementation of web application firewalls and input sanitization measures can provide additional layers of protection against XXE attacks. Organizations should also conduct thorough security assessments to identify and remediate similar vulnerabilities in other applications and systems within their infrastructure, as XXE issues often exist in multiple components of enterprise applications.