CVE-2015-5910 in Xcode
Summary
by MITRE
IDE Xcode Server in Apple Xcode before 7.0 does not ensure that server traffic is encrypted, which allows remote attackers to obtain sensitive information by sniffing the network.
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Analysis
by VulDB Data Team • 06/16/2022
The vulnerability identified as CVE-2015-5910 represents a critical security flaw in Apple Xcode Server versions prior to 7.0, specifically addressing the absence of mandatory encryption for server communications. This weakness exposes the Xcode development environment to man-in-the-middle attacks where network traffic can be intercepted and analyzed by malicious actors. The issue stems from the server's failure to enforce encrypted connections, creating an attack surface that allows threat actors to capture sensitive data transmitted between the Xcode Server and client applications. The vulnerability directly impacts the integrity and confidentiality of development workflows, particularly in enterprise environments where sensitive source code and development artifacts are routinely transmitted through the server infrastructure.
The technical implementation of this vulnerability lies in the Xcode Server's communication protocols, which do not mandate Transport Layer Security (TLS) encryption for network traffic. This design flaw allows attackers to perform packet sniffing operations on network segments where the server operates, potentially capturing authentication tokens, source code repositories, build artifacts, and other sensitive information. The vulnerability manifests when the server accepts connections without verifying that the communication channel is properly encrypted, creating a scenario where attackers can intercept and analyze traffic without requiring elevated privileges or complex exploitation techniques. This weakness aligns with CWE-319, which specifically addresses the exposure of sensitive information through improper encryption of network communications, and represents a fundamental failure in secure communication implementation within the Apple development ecosystem.
The operational impact of CVE-2015-5910 extends beyond simple information disclosure, as it compromises the entire development security posture of organizations using affected Xcode Server versions. Attackers can exploit this vulnerability to gain access to intellectual property, sensitive code repositories, and potentially escalate their access to other systems within the development infrastructure. The vulnerability is particularly dangerous in continuous integration environments where Xcode Server handles multiple concurrent builds and deployments, as each transaction represents a potential data exposure opportunity. Organizations may experience significant financial and reputational damage from such compromises, especially when sensitive source code or proprietary algorithms are intercepted through this channel. The vulnerability also enables attackers to perform reconnaissance activities that could lead to more sophisticated attacks targeting the broader development infrastructure.
Mitigation strategies for CVE-2015-5910 require immediate remediation through the upgrade to Apple Xcode 7.0 or later versions that properly enforce encrypted communications. Organizations should implement network monitoring solutions to detect and alert on unencrypted traffic patterns that may indicate exploitation attempts. Additional protective measures include configuring network segmentation to isolate Xcode Server communications, implementing mandatory VPN requirements for remote access, and establishing secure communication policies that require TLS encryption for all development infrastructure components. Security teams should also conduct comprehensive audits of their development environments to identify any additional systems that may be vulnerable to similar unencrypted communication flaws. The remediation process should include thorough testing of the updated environment to ensure that all server communications now properly enforce encryption protocols, aligning with industry best practices for secure development lifecycle management and addressing the underlying security architecture weaknesses that enabled this vulnerability.