This vulnerability allows the Go runtime on Unix platforms to handle binaries with the setuid/setgid bits inappropriately. Such behavior can lead to severe consequences, especially during memory dumps or when manipulating standard I/O file descriptors. If a setuid/setgid binary is executed with standard I/O file descriptors closed, it may expose sensitive data or allow unauthorized file access with elevated privileges.
The vulnerability is classified with a CVSS score of 7.8, marking it as high severity. This indicates a significant risk to organizations, particularly those utilizing the affected Go runtime in their applications. Due to the potential for serious impacts, organizations should prioritize patching immediately.
Given the nature of this vulnerability, it is crucial for organizations to assess their deployments of the Go runtime. The risk to organizations includes unauthorized access to sensitive data and the potential for privilege escalation incidents.
As of now, there are no known exploits associated with this vulnerability, but the risk remains high. Organizations are advised to remain vigilant and monitor for any updates from the Golang development team.
Vulnerability Details
On Unix platforms, the Go runtime does not behave differently when a binary is run with the setuid/setgid bits. This can be dangerous in certain cases, such as when dumping memory state or assuming the status of standard I/O file descriptors. If a setuid/setgid binary is executed with standard I/O file descriptors closed, opening any files can result in unexpected content being read or written with elevated privileges. Similarly, if a setuid/setgid program is terminated, either via panic or signal, it may leak the contents of its registers.
The CVSS score for this vulnerability is 7.8, indicating high severity. The attack vector is local, and the attack complexity is low, meaning that an attacker could exploit the vulnerability without requiring sophisticated methods. The required privileges are none, but user interaction is required, which means the affected binary must be executed by the user.
The vulnerability is associated with CWE-668, which refers to the exposure of sensitive information through an application that is not designed to handle sensitive data appropriately.
Technical Analysis
The root cause of this vulnerability lies in the Go runtime's handling of setuid/setgid binaries on Unix platforms. When such binaries are executed, the runtime does not alter its behavior based on the elevated privileges that the binary may entail. This oversight can lead to scenarios where sensitive data is inadvertently exposed or manipulated.
The attack vector is local, meaning that the attacker must have local access to the system to execute the binary. The attack complexity is low, indicating that relatively few steps are required to exploit the vulnerability. No specific privileges are needed to execute the vulnerable binaries, but user interaction is necessary to run them.
The potential impacts of this vulnerability are significant. The confidentiality, integrity, and availability impacts are all rated as high. This implies that an attacker could read and write sensitive information, corrupt data, or disrupt services.
Risk & Impact Analysis
Real-world deployment risk for this vulnerability is considerable. Organizations using the Go runtime should assess their applications and the environments in which they are deployed. The potential for elevated privileges to be exploited means that sensitive data could be accessed or modified without authorization.
The blast radius of this vulnerability extends to any application utilizing the affected version of the Go runtime. This can include web applications, backend services, and more. Organizations should also consider the urgency of remediation based on the CVSS score and the potential for exploitation.
Considering the CVSS score of 7.8, organizations should address this vulnerability in their priority patch cycle. Delay in remediation could result in unauthorized access and exploitation of sensitive data.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of the Go runtime include all versions prior to 1.19.10 and versions 1.20.0 through 1.20.4. Additionally, the Fedora 38 version is also affected. Organizations should review their deployments and ensure they are using the latest patched versions.
Mitigation & Remediation
Organizations should prioritize patching the Go runtime to version 1.19.10 or later, and 1.20.5 or later to mitigate this vulnerability. If immediate patching is not possible, consider implementing workarounds such as restricting the execution of setuid/setgid binaries or applying strict access controls to sensitive resources.
For comprehensive security, organizations should also implement configuration hardening, network controls, and continuous monitoring to detect any unusual activity that may indicate exploitation attempts.
For further assistance, organizations may consider engaging in penetration testing to identify similar vulnerabilities in their applications.
Detection Guidance
Organizations should monitor logs for indicators of this vulnerability, particularly focusing on execution attempts of setuid/setgid binaries. Look for behavioral anomalies such as unexpected file access or standard I/O manipulations. Additionally, keep an eye on network signatures that may indicate attempts to exploit this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability highlights a critical need for secure coding practices, especially in environments where elevated privileges are granted. Security teams must recognize patterns of misconfiguration that lead to such vulnerabilities, emphasizing the importance of regular audits and reviews of application security.
Organizations are encouraged to learn from this incident and implement robust security measures to prevent similar vulnerabilities in the future. For further insights, organizations might find guidance in the following resources: vulnerability management program, penetration testing methodology, and API penetration testing to enhance security awareness.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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