CVE-2024-45321 in App::cpanminus package
Summary
by MITRE • 08/27/2024
The App::cpanminus package through 1.7047 for Perl downloads code via insecure HTTP, enabling code execution for network attackers.
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Analysis
by VulDB Data Team • 12/06/2024
The vulnerability identified as CVE-2024-45321 affects the App::cpanminus package version 1.7047 and earlier, presenting a critical security risk through its reliance on insecure HTTP protocols for code downloads. This package serves as a command-line utility for installing perl modules from the Comprehensive Perl Archive Network and operates by fetching module distributions over network connections. The flaw manifests when the application defaults to using HTTP instead of HTTPS for retrieving package data, creating an opportunity for man-in-the-middle attacks and remote code execution. Network attackers can exploit this weakness by intercepting traffic between the client and package servers, potentially substituting legitimate modules with malicious code that executes upon installation. The vulnerability directly relates to CWE-319, which addresses the exposure of sensitive information through improper use of network protocols, and aligns with ATT&CK technique T1190, which covers exploit public-facing applications through network-based attacks. This insecure protocol usage represents a fundamental breakdown in secure software delivery practices where the integrity and authenticity of downloaded code cannot be guaranteed.
The technical implementation of this vulnerability stems from the package's default behavior of using HTTP connections without proper validation or enforcement of secure transport mechanisms. When App::cpanminus attempts to fetch perl modules, it establishes connections to remote repositories using the HTTP protocol, which lacks encryption and authentication guarantees. This insecure communication channel allows attackers positioned within the network path to perform traffic interception attacks, including DNS spoofing, ARP spoofing, or direct packet interception. The attack vector becomes particularly dangerous because perl modules can contain executable code that runs during installation, creating a pathway for arbitrary code execution on the target system. The vulnerability is classified as a remote code execution threat because an attacker does not require local system access to exploit this weakness, making it highly dangerous in environments where network traffic is not properly secured or monitored.
The operational impact of CVE-2024-45321 extends beyond simple code execution capabilities to encompass broader system compromise and data integrity violations. Organizations using affected versions of App::cpanminus face significant risk of supply chain attacks where legitimate-looking perl modules are replaced with malicious variants during download operations. This vulnerability undermines the trust model of perl package management systems and can lead to persistent backdoors, data exfiltration, or further lateral movement within compromised networks. The risk is amplified in environments where developers frequently install new perl modules or where automated deployment systems utilize this package for dependency resolution. Security teams must consider the potential for cascading effects when this vulnerability is exploited, as compromised perl modules can affect multiple applications and systems that depend on the installed packages, making the impact of a single exploitation event potentially widespread across an organization's infrastructure.
Mitigation strategies for CVE-2024-45321 should prioritize immediate remediation through version updates to App::cpanminus 1.7048 or later, which address the insecure HTTP usage by implementing proper HTTPS enforcement. Organizations should implement network-level controls such as mandatory HTTPS inspection and certificate validation to prevent downgrade attacks that could force insecure HTTP connections. Security policies must mandate the use of secure package repositories and enforce strict validation of downloaded code signatures before installation. System administrators should consider implementing network segmentation and monitoring to detect unusual traffic patterns that might indicate exploitation attempts. Additional protective measures include configuring firewalls to block HTTP traffic to package repositories and establishing secure development environments where network traffic is properly encrypted and authenticated. The vulnerability highlights the importance of secure software delivery practices and proper protocol enforcement, aligning with security frameworks that emphasize the need for encrypted communication channels and integrity verification mechanisms in all software distribution processes. Organizations should also conduct comprehensive audits of their perl package management systems to identify other potential insecure protocol usages and implement automated security scanning to detect similar vulnerabilities in their software supply chain.