CVE-2023-29402 is a critical vulnerability affecting the Golang programming language, specifically the Go command when using cgo. This vulnerability allows unexpected code generation at build time, which may lead to unintended behavior when running Go programs that utilize cgo. The issue arises particularly when dealing with untrusted modules that contain directories with newline characters in their names. It is important to note that modules retrieved using the go command, such as via "go get", are not impacted, while those fetched in GOPATH-mode might be susceptible.
The severity of this vulnerability is classified as critical, with a CVSS score of 9.8. This high score indicates a significant risk to organizations that utilize Golang, especially in environments where untrusted modules may be executed. The potential for exploitation is exacerbated by the low complexity of the attack, requiring no privileges or user interaction.
Given the nature of this vulnerability, organizations must prioritize patching immediately. Failure to address this issue may result in severe consequences, including potential data breaches or system instability. As the vulnerability affects both the Go programming language and the Fedora operating system, it is crucial for users of both technologies to remain vigilant.
As of now, there are no known exploits or public proof of concepts associated with this vulnerability. Nonetheless, organizations should stay proactive by applying the latest updates and patches provided by the vendor to mitigate risks effectively.
Vulnerability Details
The official description of CVE-2023-29402 indicates that the Go command may generate unexpected code at build time when using cgo, leading to unexpected behavior when running Go programs. The CVSS score of 9.8 classifies this vulnerability as critical, reflecting the serious impact it can have on confidentiality, integrity, and availability.
The vulnerability affects versions of the Go programming language prior to 1.19.10 and between 1.20.0 and 1.20.5. This indicates that organizations using these versions should take immediate action to update to a patched version.
This vulnerability is classified under CWE-94, which pertains to code injection vulnerabilities. The potential impact includes high confidentiality, integrity, and availability risks, making it imperative for organizations to act swiftly.
Technical Analysis
The root cause of this vulnerability lies in the Go command's handling of cgo, particularly when untrusted modules with newline characters in their directory names are involved. The attack vector is network-based, allowing attackers to exploit this vulnerability remotely.
The attack complexity is low, requiring no special privileges or user interaction. This means that even a relatively unskilled attacker could potentially exploit this vulnerability if they can manipulate the affected environment.
The impact on confidentiality, integrity, and availability is assessed as high, indicating a potential for significant disruption if exploited. Organizations using affected versions should be particularly cautious and ensure their systems are updated.
Risk & Impact Analysis
Risk to organizations includes the potential for unauthorized code execution, which can lead to data loss, system downtime, and compromised integrity of applications. The wide usage of the Go language in various applications increases the blast radius of this vulnerability.
Given the critical severity and the potential for exploitation, organizations should assess their deployment of the Go programming language and implement necessary updates as a priority. The urgency for remediation is underscored by the potential risks associated with untrusted modules.
Timely patching is essential to minimize exposure to threats, and organizations should prioritize this in their patch management processes.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerable versions of the Go language include all versions prior to 1.19.10 and from 1.20.0 to 1.20.5. Organizations using these versions should ensure they update to the latest patched versions to mitigate the risks.
Mitigation & Remediation
To remediate this vulnerability, organizations should update to the latest versions of the Go programming language. Specifically, upgrading to Go version 1.20.5 or later is essential. If an immediate update is not feasible, organizations should consider implementing workarounds such as restricting the execution of untrusted modules.
Additionally, configuration hardening and network controls can help mitigate potential exploitation. Organizations should monitor their systems for any anomalies related to this vulnerability.
For thorough validation of remediation effectiveness, organizations should engage in continuous penetration testing to identify any remaining weaknesses in their systems.
Detection Guidance
Organizations should monitor their logs for any indicators of exploitation, particularly related to the execution of untrusted modules. Behavioral anomalies related to cgo usage should be flagged for investigation.
Additionally, network signatures may be established to identify attempts to exploit this vulnerability. System changes that correlate with this vulnerability's exploitation should also be monitored closely.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2023-29402 lies in its demonstration of potential weaknesses in the Go programming language that can be exploited through cgo. This incident highlights the need for security teams to rigorously assess their use of programming languages and the potential risks associated with third-party modules.
Security teams are encouraged to adopt a proactive stance towards vulnerabilities in their development environments, ensuring that they regularly audit their codebases and dependencies for potential threats.
For further insights on enhancing security practices, organizations can benefit from exploring our detailed resources on penetration testing methodology, vulnerability management program design, and cloud penetration testing best practices to strengthen their overall security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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