CVE-2024-43451
Microsoft
CVE-2024-43451: NTLM Hash Disclosure Spoofing Vulnerability allows attackers to potentially spoof communications and steal NTLM hashes. This vulnerability arises from improper handling of NTLM authentication processes, leading to possible information disclosure. Despite a CVSS score of 6.5, the SOCRadar Vulnerability Risk Score (SVRS) is 46, indicating a moderate risk, though active exploits are available and it's listed in the CISA KEV catalog, raising concerns. Attackers could leverage this flaw to impersonate legitimate users or services, compromising the security of systems relying on NTLM for authentication. The availability of active exploits amplifies the threat, necessitating prompt security measures. While the SVRS isn't critical (above 80), the "In The Wild" tag suggests active exploitation, warranting monitoring and patching to mitigate potential risks. Organizations should review and apply vendor advisories to secure NTLM authentication mechanisms.
Description
CVE-2024-43451 is a NTLM Hash Disclosure Spoofing Vulnerability that allows attackers to potentially gain access to sensitive credentials by tricking systems into disclosing NTLM hashes. This vulnerability is categorized as a moderate risk according to the CVSS score (6.5), but SOCRadar's SVRS assigns a score of 40, highlighting the potential for exploitation. While the SVRS score is lower than 80, the 'In The Wild' tag indicates the vulnerability is actively being exploited by hackers. This means it is highly important to take immediate action to mitigate this risk.
Key Insights
- Active Exploits: This CVE is actively being exploited in the wild, meaning attackers are using publicly available tools and methods to compromise systems.
- NTLM Hash Disclosure: The vulnerability allows attackers to potentially obtain NTLM hashes from vulnerable systems. These hashes can then be cracked, potentially leading to unauthorized access to the systems or other sensitive information.
- CISA Warning: The Cybersecurity and Infrastructure Security Agency (CISA) has issued a KEV warning, urging organizations to address the vulnerability promptly.
- Wide Applicability: This vulnerability affects a wide range of systems and software that utilize NTLM authentication, making it a potentially widespread threat.
Mitigation Strategies
- Disable NTLM Authentication: If possible, completely disable NTLM authentication on your network and systems. Use modern authentication protocols such as Kerberos or OAuth 2.0 whenever feasible.
- Implement Strong Passwords: Enforce strong password policies with length, complexity, and regular rotation requirements.
- Network Segmentation: Implement network segmentation to limit the impact of a potential breach. This will help prevent attackers from spreading laterally across your network.
- Multi-Factor Authentication (MFA): Deploy multi-factor authentication (MFA) to enhance account security. This adds an extra layer of protection, making it harder for attackers to gain access to accounts even if they obtain NTLM hashes.
Additional Information
If you have any additional questions or require further information regarding this incident, please use the 'Ask to Analyst' feature, contact SOCRadar directly, or open a support ticket.
Indicators of Compromise
Exploits
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Affected Software
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CWE Details
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