CVE-2020-7650 in snyk-broker
Summary
by MITRE
All versions of snyk-broker after 4.72.0 including and before 4.73.1 are vulnerable to Arbitrary File Read. It allows arbitrary file reads to users with access to Snyk's internal network of any files ending in the following extensions: yaml, yml or json.
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Analysis
by VulDB Data Team • 05/30/2020
The vulnerability identified as CVE-2020-7650 affects snyk-broker versions ranging from 4.72.0 through 4.73.0, representing a critical arbitrary file read flaw that compromises system security. This vulnerability exists within Snyk's internal network infrastructure and specifically targets files possessing yaml yml or json extensions, creating a significant risk for organizations relying on Snyk's broker services for security operations.
The technical implementation of this vulnerability stems from insufficient input validation and access control mechanisms within the snyk-broker component. Attackers with access to Snyk's internal network can exploit this weakness to read arbitrary files from the system, potentially gaining access to sensitive configuration data, authentication credentials, or other critical information stored in the specified file formats. The vulnerability operates by bypassing normal file access controls, allowing unauthorized file system traversal and read operations.
The operational impact of this vulnerability extends beyond simple data exposure, as it enables attackers to potentially extract confidential information from systems that should remain protected. Organizations using snyk-broker in their security infrastructure face risks including credential theft, configuration disclosure, and potential escalation to further system compromise. The vulnerability is particularly concerning because it affects a component that typically operates with elevated privileges and network access, amplifying the potential damage from a successful exploitation.
Security professionals should note that this vulnerability aligns with CWE-22 (Improper Limitation of a Pathname to a Restricted Directory) and represents a classic path traversal attack vector. The ATT&CK framework categorizes this as a technique involving privilege escalation and credential access through exploitation of software vulnerabilities. Organizations should prioritize immediate patching of affected systems to prevent potential exploitation, as the vulnerability exists in a component that typically operates within trusted network boundaries, making detection and prevention more challenging.
The affected versions of snyk-broker represent a specific window of vulnerability that requires urgent remediation. Organizations should implement network segmentation to limit access to Snyk's internal infrastructure and ensure that only authorized personnel can access the broker services. Additionally, monitoring for unusual file access patterns and implementing proper access controls on the file system can help detect potential exploitation attempts. The vulnerability demonstrates the importance of secure coding practices and proper input validation, particularly in components that handle network-based file operations and internal system communication.