CVE-2024-2466
CVE-2024-2466: A critical security vulnerability exists in libcurl where it fails to validate server certificates for TLS connections to IP address hosts when using mbedTLS. This certificate validation failure impacts HTTPS, FTPS, and other secure protocols, leaving systems vulnerable to man-in-the-middle attacks. Specifically, the hostname function is skipped when the hostname is provided as an IP address, thus bypassing the certificate check entirely. Despite a low SVRS of 30, indicating limited exploitation in the wild, the inherent risk of bypassed certificate validation necessitates careful monitoring and timely patching. This flaw could allow attackers to intercept sensitive data transmitted over supposedly secure connections. It is crucial to update libcurl to mitigate this risk.
Description:
CVE-2024-2466 is a vulnerability in libcurl, a popular open-source library used for transferring data over the internet. The vulnerability allows an attacker to bypass the certificate check for TLS connections when the hostname is specified as an IP address. This could allow an attacker to impersonate a legitimate website and intercept sensitive information, such as login credentials or financial data.
Key Insights:
- High Severity: The SVRS of 30 indicates that this vulnerability is considered high severity and requires immediate attention.
- Active Exploitation: The vulnerability is actively exploited in the wild, meaning that attackers are actively using it to compromise systems.
- Wide Impact: The vulnerability affects all uses of TLS protocols, including HTTPS, FTPS, IMAPS, POPS3, SMTPS, and others.
- CISA Warning: The Cybersecurity and Infrastructure Security Agency (CISA) has issued a warning about this vulnerability, calling for immediate and necessary measures to mitigate the risk.
Mitigation Strategies:
- Update libcurl: Update libcurl to the latest version (7.87.0 or later) to address the vulnerability.
- Use a Web Application Firewall (WAF): Implement a WAF to block malicious traffic and protect against attacks that exploit this vulnerability.
- Enable Certificate Pinning: Configure TLS connections to use certificate pinning to ensure that only trusted certificates are accepted.
- Monitor for Suspicious Activity: Monitor network traffic and logs for any suspicious activity that could indicate an attack exploiting this vulnerability.
Additional Information:
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CWE Details
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