CVE-2024-47176 is identified as a medium-severity vulnerability affecting OpenPrinting's CUPS-browsed component, which is responsible for network printing functionality. This vulnerability allows for remote code execution due to improper handling of network requests. The CVSS score for this vulnerability is 5.3, indicating a moderate level of risk to organizations that utilize this printing system.
Risk to organizations includes potential unauthorized access to systems through malicious printer connections. Attackers may leverage this vulnerability to execute arbitrary commands remotely on target machines without authentication, especially when combined with other vulnerabilities such as CVE-2024-47076, CVE-2024-47175, and CVE-2024-47177. Organizations should prioritize patching immediately.
This vulnerability was published on September 26, 2024, and is currently classified as modified, highlighting the evolving nature of vulnerabilities in software systems. The urgency for defenders is high, given the potential for exploitation in networked environments.
Exploitability is rated high, with confirmed exploits available. Organizations utilizing CUPS-browsed should take immediate action to mitigate risks posed by this vulnerability.
Vulnerability Details
This vulnerability allows CUPS-browsed, which binds to INADDR_ANY:631, to trust any packet from any source, leading to potential exploitation. The vulnerability type is classified under CWE-1327, indicating a risk of improper validation of input.
The vulnerability affects CUPS-browsed version 2.0.1 and was disclosed in the OpenPrinting GitHub repository.
The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N, reflecting low attack complexity and no privileges required for exploitation.
Technical Analysis
The root cause of this vulnerability stems from the binding of CUPS-browsed to INADDR_ANY, allowing it to receive and trust packets from any source. As a result, when an attacker sends a crafted IPP request, it can lead to remote command execution if combined with other vulnerabilities.
The attack vector is network-based, meaning that an attacker can exploit this vulnerability remotely. The attack complexity is low, requiring no special conditions or privileges, making it accessible to a wider range of attackers. No user interaction is required, which further simplifies the exploitation process.
In terms of impact, the confidentiality impact is none, while the integrity impact is low, as attackers may alter data or configurations. Availability impact remains none, indicating that the service itself will not be disrupted, but the integrity of the system can be compromised.
Risk & Impact Analysis
Real-world deployment of CUPS-browsed in environments with exposed network printing capabilities increases the risk of exploitation significantly. This vulnerability poses a considerable threat, especially in organizations that rely on network printing without adequate security measures.
The potential blast radius for this vulnerability is substantial, as it could affect multiple systems if a malicious printer is introduced to the network. Organizations need to be aware of the implications of this vulnerability and the importance of securing their printing infrastructure.
Given the CVSS score of 5.3 and the absence of KEV status, organizations should assess their risk exposure and prioritize patching within their security update cycles. The high exploitability rating necessitates immediate attention.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
CUPS-browsed version 2.0.1 is affected by this vulnerability. If version information is missing, organizations should consider all versions prior to vendor patch.
Mitigation & Remediation
Organizations should apply available patches from OpenPrinting to remediate this vulnerability. If patches are not available, organizations may need to implement workarounds such as restricting network access to the CUPS-browsed service or implementing firewall rules to limit exposure.
Additionally, organizations can enhance security through network controls and monitoring to detect any anomalies related to IPP requests.
For further guidance on security best practices, organizations can refer to resources on penetration testing methodology.
Detection Guidance
Monitoring for unusual traffic patterns and IPP requests to CUPS-browsed can help detect potential exploitation attempts. Log indicators related to printer jobs and IPP communications should be closely examined.
Behavioral anomalies in network traffic may also indicate exploitation attempts or unauthorized access attempts.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2024-47176 lies in its demonstration of how network services can be exploited through misconfigurations. This vulnerability highlights the need for security teams to regularly review and enhance their security posture regarding networked printing services.
Security teams should consider implementing layered defenses to protect against such vulnerabilities, including regular security assessments and penetration testing.
For further insights into best practices, organizations can consult the following resources on vulnerability management programs, penetration testing methodology, and cloud security assessments.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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