CVE-2025-22869 is a high-severity vulnerability in Go's SSH component, specifically affecting servers that implement file transfer protocols. With a CVSS score of 7.5, this vulnerability poses significant risks to organizations utilizing SSH for secure communications.
This vulnerability allows attackers to exploit SSH servers by completing the key exchange process slowly or not at all. This can lead to a denial of service, where pending content is indefinitely read into memory but never transmitted, ultimately exhausting system resources.
Given the potential impact on system availability, organizations should prioritize patching this vulnerability immediately. The exploitation status is currently assessed as high, indicating the need for swift action to mitigate risks.
This vulnerability was published on February 26, 2025, and has been classified under CWE-770, indicating inadequate resource management. Organizations using affected versions of Go's SSH component must take action to address this issue.
Vulnerability Details
The vulnerability description states that SSH servers implementing file transfer protocols are susceptible to a denial of service attack caused by clients not completing the key exchange. This can lead to significant resource exhaustion, affecting the availability of the affected systems.
The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, which reflects a network attack vector with low complexity and no privileges required. The availability impact is rated as high, indicating that organizations face substantial risks if this vulnerability is exploited.
Affected products include the SSH component of Go, specifically all versions prior to 0.35.0. Organizations are encouraged to review their systems to identify if they are running vulnerable versions.
Technical Analysis
The root cause of CVE-2025-22869 lies in the handling of key exchanges during file transfers. When clients complete the key exchange slowly or not at all, it results in content being held in memory without being transmitted, leading to resource exhaustion.
The attack vector is classified as network-based, and the attack complexity is low. No privileges are required for exploitation, and user interaction is not necessary. This means that the vulnerability can be exploited remotely without any special conditions.
Regarding impact, the vulnerability affects the availability of the system, as resources may be consumed without recovery. There are no confidentiality or integrity impacts associated with this vulnerability.
Risk & Impact Analysis
Organizations should be acutely aware of the risks associated with CVE-2025-22869. The potential for denial of service attacks can severely disrupt operations, especially for organizations relying on SSH for critical file transfers and secure communications.
The urgency for remediation is high, and organizations must prioritize patching to mitigate the risks posed by this vulnerability. The blast radius potential is significant, particularly for environments where SSH is heavily utilized.
Risk to organizations includes potential downtime and resource exhaustion, which can lead to loss of productivity and increased operational costs. Security teams should assess their environments for vulnerable versions and implement necessary updates.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of Go's SSH component prior to 0.35.0 are affected by this vulnerability. Organizations must upgrade to the latest patch to ensure their systems are secure.
Mitigation & Remediation
Organizations should prioritize patching to address CVE-2025-22869. The recommended action is to upgrade to the latest version of Go that addresses this vulnerability. If immediate patching is not possible, organizations should consider implementing strict access controls to limit exposure.
Further, organizations should conduct security assessments to identify any other potential vulnerabilities in their systems. Security teams can benefit from penetration testing to validate their security posture.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor for unusual patterns in SSH traffic, particularly during file transfers. Log events indicating slow or incomplete key exchanges may also be indicative of an active exploitation attempt.
Behavioral anomalies in SSH sessions should be analyzed, and alerts should be configured for any unusual resource consumption on affected systems.
AppSecure Threat Intelligence Insight
CVE-2025-22869 represents a significant risk for organizations utilizing Go's SSH component. The patterns of denial of service vulnerabilities continue to emerge, highlighting the importance of robust security practices in software development.
Security teams should take this opportunity to review and enhance their incident response strategies. For organizations seeking to bolster their defenses, application security assessments can identify vulnerabilities ahead of time.
To stay informed on emerging threats, organizations should consider engaging in red teaming exercises that simulate real-world attack scenarios, thus enhancing their overall security posture.
By proactively addressing vulnerabilities like CVE-2025-22869, organizations can reduce the attack surface and protect their critical infrastructure.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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