CVE-2014-4040 in powerpc-utils
Summary
by MITRE
snap in powerpc-utils 1.2.20 produces an archive with fstab and yaboot.conf files potentially containing cleartext passwords, and lacks a warning about reviewing this archive to detect included passwords, which might allow remote attackers to obtain sensitive information by leveraging access to a technical-support data stream.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 03/04/2025
The vulnerability identified as CVE-2014-4040 affects the snap utility within the powerpc-utils package version 1.2.20, presenting a significant security risk through improper handling of sensitive data during system backup operations. This flaw specifically impacts systems running on powerpc architecture where the snap utility is used to create archives containing critical system configuration files. The vulnerability stems from the utility's failure to properly sanitize or warn users about the inclusion of cleartext passwords within archived files, particularly those related to filesystem mounting and boot configuration.
The technical implementation of this vulnerability involves the snap utility's automatic inclusion of fstab and yaboot.conf files within generated archives without adequate user notification or password sanitization. These configuration files traditionally contain sensitive authentication information including passwords for network filesystems, encrypted volumes, and other authenticated system components. When the snap utility creates archives for technical support purposes, it inadvertently packages these files without alerting administrators to the potential exposure of cleartext credentials. This behavior creates an attack vector where remote adversaries with access to technical support data streams can extract and utilize these passwords to gain unauthorized system access.
The operational impact of this vulnerability extends beyond simple credential exposure, as it fundamentally undermines the security posture of systems relying on automated backup mechanisms. System administrators who use snap for routine maintenance or technical support data collection may unknowingly create archives containing sensitive information that could be accessed by unauthorized parties. The vulnerability particularly affects enterprise environments where technical support data streams are shared across multiple administrative domains or stored in centralized repositories. Attackers can leverage this weakness to obtain credentials for network file systems, encrypted partitions, and other authenticated services that rely on the configuration files included in the snap archives.
Security professionals should consider this vulnerability in the context of CWE-200, which addresses exposure of sensitive information, and CWE-312, which covers cleartext storage of sensitive information. The attack pattern aligns with ATT&CK technique T1552.001, focusing on credentials in files, and T1005, which involves data from local system storage. Organizations should implement immediate mitigation strategies including disabling the automatic inclusion of sensitive configuration files in snap archives, implementing manual review processes for generated archives, and establishing clear administrative procedures for handling technical support data streams. Additionally, system administrators should consider implementing automated scanning tools to detect and remove sensitive information from backup archives before they are distributed or stored in shared locations.
The vulnerability demonstrates a critical gap in secure configuration management practices and highlights the importance of proper input sanitization and user awareness in system administration tools. Organizations should conduct comprehensive audits of their backup and recovery procedures to ensure that sensitive information is properly handled during system maintenance operations. Regular security assessments should include evaluation of automated tools for potential exposure of credentials and other sensitive data within system archives. The remediation process should involve updating to patched versions of powerpc-utils where available, or implementing custom workarounds that prevent automatic inclusion of sensitive configuration files in backup operations.