A path traversal vulnerability was discovered in go-git versions prior to v5.11. This vulnerability allows an attacker to create and amend files across the filesystem. In the worse case scenario, remote code execution could be achieved.
Applications are only affected if they are using the ChrootOS, which is the default when using "Plain" versions of Open and Clone functions (e.g. PlainClone). Applications using BoundOS or in-memory filesystems are not affected by this issue. This is a go-git implementation issue and does not affect the upstream git CLI.
The severity of this vulnerability is classified as critical with a CVSS score of 9.8. Organizations should prioritize patching immediately to mitigate the risk of exploitation.
Risk to organizations includes potential unauthorized access to sensitive files and remote code execution, which could compromise the entire system.
As of now, there is no public exploit confirmed, but the existence of this vulnerability in a widely used library necessitates immediate attention.
Vulnerability Details
The vulnerability allows attackers to perform path traversal attacks, a type of security flaw where an attacker can manipulate file paths to access unauthorized directories and files.
The CVSS score of 9.8 indicates a critical severity level, with high impact on confidentiality, integrity, and availability of the system. The vulnerability affects all versions of go-git from 4.0.0 up to, but not including, 5.11.0.
The vulnerability was published on January 12, 2024, and it is classified under CWE-22, which relates to improper restriction of a pathname.
Technical Analysis
The root cause of this vulnerability lies in the implementation of the go-git library, specifically related to how it handles file paths when using the default ChrootOS configuration.
The attack vector is network-based, meaning an attacker can exploit this vulnerability remotely. The complexity of the attack is low, as no special privileges are required. Additionally, no user interaction is needed to exploit this vulnerability.
If exploited, the confidentiality, integrity, and availability of the system could be severely compromised, as attackers may gain access to sensitive files and execute arbitrary code.
Risk & Impact Analysis
Deployment of vulnerable versions of go-git poses significant risks to organizations, particularly those relying on this library for critical functionality. The ability for an attacker to perform remote code execution means that an organization could face data loss, unauthorized access, and potential legal ramifications.
Given the critical nature of this vulnerability, organizations should address the issue in their priority patch cycle. The potential blast radius is considerable, impacting any application utilizing the go-git library under the specified conditions.
The CVSS score and the fact that it is not yet included in the KEV catalog indicate that immediate action is advisable to prevent exploitation.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of go-git from 4.0.0 to 5.11.0 are affected. Organizations should upgrade to the latest version to mitigate this vulnerability.
Mitigation & Remediation
Organizations should prioritize patching immediately. The recommended action is to upgrade to go-git version 5.11.0 or later. If an immediate upgrade is not possible, consider using the BoundOS configuration or an in-memory filesystem to avoid the risk associated with ChrootOS.
For further security testing, organizations can engage in penetration testing to validate the effectiveness of their remediation efforts.
Detection Guidance
Organizations should monitor logs for unusual file access patterns and any anomalies that could indicate exploitation attempts. Behavioral anomalies related to file system changes should also be tracked.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its potential to highlight weaknesses in widely used libraries such as go-git. Organizations must learn to scrutinize third-party components closely to mitigate risks.
This vulnerability serves as a reminder of the importance of maintaining updated software versions and implementing strong security measures. Regular audits and security assessments can help identify similar vulnerabilities.
For strategic defensive takeaways, organizations should adopt a proactive approach to vulnerability management and leverage services like application security assessments to ensure their deployments remain secure.
Organizations should also consider utilizing continuous penetration testing to identify and remediate vulnerabilities in real-time.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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