The vulnerability identified as CVE-2025-0825 affects yhirose's cpp-httplib in versions v0.17.3 through v0.18.3. This vulnerability allows for CRLF injection through unfiltered CRLF characters prefixed with a null byte. Attackers may exploit this flaw to execute various attacks, including HTTP Response Splitting and Cross-Site Scripting (XSS).
With a CVSS score of 6.9, categorized as medium severity, the implications of this vulnerability are significant. Organizations using the affected versions need to prioritize addressing this vulnerability to mitigate potential risks.
The urgency for remediation is underscored by the potential for exploitation. Although there are currently no known public exploits, the possibility remains, which necessitates prompt action to secure systems.
Organizations should prioritize patching immediately to ensure their applications are secure against this vulnerability.
Vulnerability Details
The official description of this vulnerability states that CVE-2025-0825 occurs in cpp-httplib versions v0.17.3 to v0.18.3. This issue arises due to the failure to properly filter CRLF characters when prefixed with a null byte. Attackers may leverage this oversight to inject CRLF sequences, leading to HTTP Response Splitting and XSS attacks.
The CVSS score is categorized as medium, with a base score of 6.9, indicating that while the vulnerability is serious, it does not reach critical levels that could warrant immediate, widespread panic. The attack vector is classified as network-based with low complexity, and it requires active user interaction.
Affected products include cpp-httplib, with a specific focus on versions from 0.17.3 through 0.18.3. The vulnerability was published on February 4, 2025, and has been classified under CWE-113, indicating a failure to restrict or control the format of output.
Technical Analysis
The root cause of CVE-2025-0825 can be traced back to the improper handling of CRLF characters. The lack of validation allows attackers to inject malicious payloads into HTTP headers, which can lead to various forms of attacks. The attack vector is network-based, with an attack complexity rated as low, meaning that attackers can exploit this vulnerability easily.
No privileges are required for exploitation, which means that even unauthenticated users can potentially exploit this vulnerability. User interaction is necessary for some attack scenarios, as attackers may need users to click on malicious links or access compromised resources.
The impact on integrity is classified as high, highlighting that successful exploitation can modify the integrity of the application's responses, potentially leading to further vulnerabilities and data exposure.
Risk & Impact Analysis
Real-world deployment risks for organizations utilizing cpp-httplib are significant. The potential for HTTP Response Splitting and XSS can lead to unauthorized access, data breaches, and a compromised user experience. The blast radius includes all services utilizing the affected versions, which can severely impact business operations.
Organizations should assess their exposure to this vulnerability and prioritize remediation based on their environment's risk profile. Given the medium severity classification and the potential for exploitation, organizations should address in priority patch cycle.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
This vulnerability impacts cpp-httplib versions v0.17.3 to v0.18.3. Organizations using these versions should take immediate steps to upgrade to the latest patched version to mitigate risks.
Mitigation & Remediation
Organizations should ensure that they apply the latest patches from yhirose for cpp-httplib. The patched version addresses the CRLF injection vulnerability effectively. If immediate patching is not possible, consider implementing workarounds such as input validation and sanitization.
For comprehensive security, organizations may also look into penetration testing services to identify potential vulnerabilities and ensure their systems are secure.
Detection Guidance
Monitor logs for unusual HTTP headers that may indicate CRLF injection attempts. Look for behavioral anomalies where application responses do not conform to expected patterns, especially in user interactions.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-0825 lies in its demonstration of how overlooked input validation can lead to severe vulnerabilities. Security teams should prioritize rigorous testing and validation of input across all applications to prevent similar issues.
This vulnerability reflects a common trend in web applications where improper handling of input can lead to serious security breaches. Organizations must adopt a proactive stance by implementing comprehensive security measures.
For further insights on vulnerabilities and security best practices, consider exploring our resources on penetration testing methodology and the importance of maintaining a robust vulnerability management program to safeguard against such vulnerabilities.
Additionally, enhancing your understanding of common security pitfalls can be achieved by reviewing our material on web application penetration testing and related topics.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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