CVE-2012-4991 in SecureTransport
Summary
by MITRE
Multiple directory traversal vulnerabilities in Axway SecureTransport 5.1 SP2 and earlier allow remote authenticated users to (1) read, (2) delete, or (3) create files, or (4) list directories, via a ..%5C (encoded dot dot backslash) in a URI.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 09/12/2025
The CVE-2012-4991 vulnerability represents a critical directory traversal flaw in Axway SecureTransport version 5.1 SP2 and earlier systems, exposing organizations to significant security risks through remote authenticated attacks. This vulnerability specifically targets the file system access controls within the SecureTransport application, allowing attackers who have valid authentication credentials to exploit improper input validation mechanisms in the URI handling process. The flaw manifests when the application fails to properly sanitize user-supplied input containing encoded directory traversal sequences, creating opportunities for unauthorized file system operations.
The technical exploitation of this vulnerability relies on the use of ..%5C sequences within Uniform Resource Identifiers, where %5C represents the URL-encoded backslash character. This encoding bypasses basic input validation checks and allows attackers to navigate outside the intended directory structure, enabling operations such as reading sensitive files, deleting critical system components, creating malicious files, or enumerating directory contents. The vulnerability stems from inadequate path normalization and validation processes within the application's file handling routines, which should have properly resolved and sanitized all incoming URI parameters before processing file system requests.
Operationally, this vulnerability poses severe risks to organizations using Axway SecureTransport, as it enables authenticated attackers to potentially access confidential data, disrupt system operations, or establish persistent access points within the environment. The impact extends beyond simple data theft, as attackers can leverage this vulnerability to modify system files, create backdoors, or escalate privileges within the application's operational context. The remote nature of the attack means that compromised credentials can be exploited from external networks, while the authenticated requirement reduces detection likelihood compared to unauthenticated attacks. This vulnerability directly aligns with CWE-22 Directory Traversal and CWE-352 Cross-Site Request Forgery patterns, representing a fundamental failure in input validation and access control implementation.
Organizations should immediately implement mitigations including upgrading to patched versions of Axway SecureTransport, implementing strict input validation for all URI parameters, and establishing comprehensive monitoring of file system access patterns. Network segmentation and privileged access controls should be enforced to limit the potential impact of credential compromise. The vulnerability also highlights the importance of following secure coding practices such as those outlined in the OWASP Top Ten and NIST Cybersecurity Framework, particularly regarding input validation and access control mechanisms. Security teams should conduct thorough vulnerability assessments of all file handling components within their infrastructure and implement automated scanning tools to detect similar traversal patterns in other applications. Additionally, implementing proper logging and alerting for directory traversal attempts will aid in early detection of exploitation attempts and support incident response activities.