git-lfs: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (CVE-2024-53263) #shorts
Summary
In today's episode, we discuss a critical vulnerability identified as CVE-2024-53263 affecting Git LFS, a Git extension for versioning large files. This vulnerability permits privilege escalation by exploiting improper neutralization of special elements within the Git credential management process.
Product details
Git LFS, or Git Large File Storage, is a tool used to manage large files within a Git repository. This extension helps manage and version large files beyond the capacity usually handled by native Git. The vulnerability affects Git LFS versions from 0.1.0 up to but not including 3.6.1.
Vulnerability type summary
The vulnerability falls under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component, commonly referred to as an 'Injection' flaw. This type of vulnerability occurs when untrusted inputs are improperly sanitized before being passed to downstream components, allowing attackers to manipulate system behavior.
Details of the vulnerability
The issue arises when Git LFS requests credentials from Git for a remote host. Portions of the host's URL are passed to the git-credential command without validating for line-ending control characters. Malicious actors can exploit this by embedding URL-encoded control characters, such as line feed (LF) or carriage return (CR), to retrieve user credentials. The vulnerability affects all previous versions and is patched in version 3.6.1. Users are strongly encouraged to upgrade immediately to mitigate risks, as no workarounds are currently available.
Conclusion
In conclusion, CVE-2024-53263 highlights the importance of input validation and proper sanitization processes within software components. Affected users, particularly those using versions lower than 3.6.1, should update promptly to ensure their systems are secure. This vulnerability serves as a reminder of the necessity for vigilance in maintaining software and implementing security patches as they become available.
Watch the full video on YouTube: CVE-2024-53263
Remediation and exploitation details
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