CVE-2016-10690 in openframe-ascii-image
Summary
by MITRE
openframe-ascii-image module is an openframe plugin which adds support for ascii images via fim. openframe-ascii-image downloads resources over HTTP, which leaves it vulnerable to MITM attacks. It may be possible to cause remote code execution (RCE) by swapping out the requested resources with an attacker controlled copy if the attacker is on the network or positioned in between the user and the remote server.
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Analysis
by VulDB Data Team • 02/14/2020
The openframe-ascii-image module represents a security vulnerability that stems from its reliance on unencrypted HTTP communication for resource downloads. This module serves as an openframe plugin designed to facilitate ascii image support through the fim application, creating a potential attack vector that extends beyond simple data transmission. The fundamental flaw lies in the module's inability to verify the integrity and authenticity of downloaded resources, leaving systems exposed to man-in-the-middle attacks that can compromise the entire execution environment.
This vulnerability operates through a classic MITM attack pattern where an adversary positioned between the user and remote server can intercept and manipulate HTTP traffic. The module's use of HTTP instead of HTTPS creates an unauthenticated communication channel that allows attackers to substitute legitimate resources with malicious counterparts. When the module downloads resources over HTTP, it fails to implement proper certificate validation or resource integrity checks, creating a pathway for remote code execution through resource substitution attacks.
The operational impact of this vulnerability extends beyond simple data interception, as it enables attackers to execute arbitrary code on affected systems. When an attacker successfully replaces a legitimate resource with a malicious one, the openframe-ascii-image module will execute the attacker-controlled code within the context of the application. This represents a critical security flaw that aligns with CWE-319, which addresses the exposure of sensitive information through improper use of network protocols. The vulnerability affects systems where the module operates with elevated privileges, potentially allowing attackers to gain complete control over the affected environment.
Mitigation strategies for this vulnerability must address the core issue of insecure HTTP communication and implement proper resource verification mechanisms. Organizations should immediately upgrade to versions of the openframe-ascii-image module that utilize HTTPS for all resource downloads, ensuring encrypted communication channels that prevent MITM attacks. The implementation of certificate pinning and resource integrity checks would provide additional layers of protection against resource substitution attacks. Security controls should also include network monitoring to detect unauthorized access attempts and regular security assessments to identify similar vulnerabilities in other modules. This vulnerability demonstrates the importance of secure coding practices and adherence to security standards such as those outlined in the OWASP Top Ten, specifically addressing the risk of insecure communication channels and the potential for remote code execution through unauthenticated resource downloads.