CVE-2023-45289 is a medium-severity vulnerability affecting the Go programming language's http.Client. This vulnerability allows sensitive headers, such as "Authorization" and "Cookie", to be forwarded unexpectedly when following an HTTP redirect to a domain that does not match the original domain. For instance, a redirect from foo.com to www.foo.com will forward the Authorization header, while a redirect to bar.com will not. This behavior can be exploited using a maliciously crafted HTTP redirect.
The vulnerability has a CVSS score of 4.3, indicating its medium severity. Organizations using the affected versions of Go should understand the risks associated with this vulnerability, particularly the potential exposure of sensitive information through unauthorized header forwarding. Given the nature of this issue, it is crucial for organizations to prioritize addressing it in their patch cycles.
Currently, the exploitation status for this vulnerability is classified as deferred, meaning it is not actively exploited in the wild. However, the risk to organizations includes potential data leaks if the vulnerability is not mitigated through timely updates. Organizations should evaluate their usage of Go's http.Client and take appropriate actions.
It is important for organizations to monitor their systems and apply any necessary patches as they become available. Regular security assessments and penetration testing can help identify vulnerabilities such as CVE-2023-45289, ensuring that sensitive data remains protected.
Organizations should prioritize patching immediately to mitigate risks associated with this vulnerability.
Vulnerability Details
CVE-2023-45289 affects the Go programming language's http.Client when handling HTTP redirects. The vulnerability description states that sensitive headers are not forwarded when the redirect leads to a domain that is neither a subdomain match nor an exact match of the original domain. The CVSS score of 4.3 classifies this vulnerability as medium severity, indicating that it poses a moderate risk to affected systems.
No specific vendor or product versions are mentioned, but the vulnerability affects Go applications that utilize the http.Client component. As such, organizations employing Go should assess their systems to determine if they are impacted by this issue.
Technical Analysis
The root cause of this vulnerability lies in the handling of HTTP redirects within the http.Client. When a redirect is made to a domain that does not match the original, sensitive headers that should remain confidential may be forwarded unintentionally. This can lead to unauthorized access to sensitive information if the redirect target is controlled by an attacker.
The attack vector is network-based, as it relies on the ability to craft malicious redirects that can exploit the behavior of the http.Client. The attack complexity is classified as low, meaning that attackers do not require advanced skills to exploit this vulnerability. Privileges required to execute the attack are low, as unauthorized users can potentially trigger the redirect. User interaction is not required, making the vulnerability more dangerous.
The impact on confidentiality is assessed as low, as sensitive headers may be exposed under specific conditions. However, there is no integrity or availability impact associated with this vulnerability.
Risk & Impact Analysis
The real-world risk associated with CVE-2023-45289 includes the potential exposure of sensitive information through improperly forwarded headers. If an attacker can manipulate redirects, they may gain access to sensitive data, compromising user privacy and security.
The blast radius for this vulnerability could be significant if exploited, as it may affect numerous applications utilizing the http.Client for making network requests. Organizations leveraging Go should assess their environments to identify any applications at risk.
Given the CVSS score of 4.3 and the deferred status of the vulnerability, organizations should address it in their priority patch cycle. Although it is not currently actively exploited, the risk remains, and proactive measures should be taken.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
Currently, there are no specific affected versions listed for CVE-2023-45289. Organizations should consider all versions prior to vendor patch.
Mitigation & Remediation
Organizations should regularly monitor for updates related to CVE-2023-45289 and apply patches as they become available. If a patch is not yet available, consider implementing workarounds to limit exposure. Configuration hardening and network controls can help mitigate the risks associated with this vulnerability.
For detailed guidance on security testing, organizations should refer to the penetration testing methodology to identify potential weaknesses.
Detection Guidance
Organizations should monitor logs for unusual HTTP redirect behavior, particularly those that lead to unexpected domains. Behavioral anomalies should be investigated, especially if sensitive headers are being forwarded inappropriately. Network signatures can be established to detect any such malicious redirect attempts.
AppSecure Threat Intelligence Insight
CVE-2023-45289 highlights a significant concern regarding the handling of sensitive headers during HTTP redirects. This vulnerability serves as a reminder for security teams to continuously assess their applications for similar weaknesses. Organizations should adopt a proactive approach to security by integrating comprehensive security assessments into their development processes.
To enhance application security, teams can explore various resources, including application security assessments and cloud penetration testing to safeguard their systems.
Overall, organizations should remain vigilant and adapt their security strategies in response to evolving threats, ensuring they are prepared for potential vulnerabilities like CVE-2023-45289.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)