CVE-2015-10088 in ayttm
Summary
by MITRE • 03/05/2023
A vulnerability, which was classified as critical, was found in ayttm up to 0.5.0.89. This affects the function http_connect in the library libproxy/proxy.c. The manipulation leads to format string. It is possible to initiate the attack remotely. The name of the patch is 40e04680018614a7d2b68566b261b061a0597046. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-222267.
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Analysis
by VulDB Data Team • 03/31/2023
The vulnerability identified as CVE-2015-10088 represents a critical format string vulnerability within the ayttm application version 0.5.0.89, specifically affecting the http_connect function in the libproxy/proxy.c library component. This flaw resides in the core proxy handling mechanism that governs network communication between the application and external servers. The vulnerability's classification as critical indicates its potential for severe exploitation, particularly given that it can be initiated remotely without requiring local system access or user interaction. The format string vulnerability arises from improper handling of user-supplied input within printf-style functions, where attacker-controlled data is directly passed as format specifiers rather than being properly sanitized or escaped.
The technical exploitation of this vulnerability occurs through manipulation of the http_connect function's parameter handling, specifically when processing HTTP proxy connections. When the application processes network requests through the affected proxy library, it fails to properly validate or sanitize input parameters that are subsequently used in format string operations. This creates an opportunity for attackers to inject malicious format specifiers that can lead to arbitrary code execution, memory corruption, or information disclosure. The remote attack vector means that adversaries can exploit this weakness from external network positions without requiring physical access to the target system, making it particularly dangerous in networked environments where ayttm is deployed. The patch referenced as 40e04680018614a7d2b68566b261b061a0597046 specifically addresses this issue by implementing proper input validation and format string handling within the proxy.c library component.
The operational impact of this vulnerability extends beyond simple remote code execution to encompass potential system compromise and data breach scenarios. Attackers exploiting this weakness could gain unauthorized access to systems running affected versions of ayttm, potentially leading to complete system takeover or data exfiltration from networked environments. The vulnerability affects organizations that rely on ayttm for network proxy management, particularly those in environments where proxy configuration is critical for network access control. Security professionals should note that this vulnerability aligns with CWE-134, which specifically addresses the use of format strings with user-supplied data, and represents a clear violation of secure coding practices. The ATT&CK framework would categorize this vulnerability under initial access and execution tactics, as it provides a pathway for adversaries to establish persistent access to target systems through network-based exploitation.
Organizations should prioritize immediate remediation of this vulnerability by applying the provided patch referenced in the advisory. The patch implementation involves modifying the proxy.c library to ensure proper handling of format strings and input validation within the http_connect function. System administrators should conduct thorough vulnerability assessments to identify all instances of affected ayttm versions within their network infrastructure, particularly in environments where proxy functionality is utilized. Additional mitigations should include network segmentation to limit exposure of affected systems, implementation of intrusion detection systems to monitor for exploitation attempts, and regular security updates to prevent similar vulnerabilities from emerging in other components of the software stack. The vulnerability's classification as critical underscores the urgency of remediation efforts, as exploitation could lead to significant operational disruption and security breaches across affected organizations.