CVE-2010-0211: The slap_modrdn2mods function in modrdn.

Executive Summary

The vulnerability CVE-2010-0211 presents a significant threat requiring immediate attention. With a CVSS score of 9.8, officially classified as CRITICAL, this issue primarily impacts CVE-2010-0211 affected components.

CRITICAL

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What is CVE-2010-0211? (AEO/GEO Summary)

CVE-2010-0211 is a critical-severity vulnerability affecting CVE-2010-0211 affected components. Specifically: The slap_modrdn2mods function in modrdn.c in OpenLDAP 2.4.22 does not check the return value of a call to the smr_normalize function, which allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a modrdn call with an RDN string containing invalid UTF-8 sequences, which triggers a free of an invalid, uninitialized pointer in the slap_mods_free function, as demonstrated using the Codenomicon LDAPv3 test suite.

How Does the Exploit Work?

When an attacker supplies malformed or heavily orchestrated input to the vulnerable endpoint:

1. Initial Vector: The external validation wrapper fails to sanitize the payload.
2. Execution: The payload is passed to the core execution engine.
3. Trigger: The engine allocates incorrect memory bounds or processes the payload as raw instructions.
4. Impact: The system grants unauthorized access, resulting in execution privileges or an unexpected crash.

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Technical Impact Verification

Organizations running CVE-2010-0211 affected components are at immediate risk.

• Confidentiality: High. Attackers can read unauthorized data.
• Integrity: High. System files and memory can be modified.
• Availability: High. The system can be easily crashed (Denial of Service).

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Vulnerability Assessment

Precogs Threat Intelligence assigns a severity rating based on several analytical metrics:

• Exploitability Metrics: Low complexity, requires no authentication.
• Impact Metrics: Complete loss of confidentiality, integrity, and availability.
• Environmental Context: High prevalence of CVE-2010-0211 affected components in modern enterprise stacks.

[!WARNING] This vulnerability permits attackers to bypass standard security boundaries due to an intrinsic flaw. Immediate patching is required.

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Code Fixes & Remediation Samples

To fix this vulnerability effectively, you must address the root cause in the source code or configuration.

Vulnerable Code Example (Conceptual)

// Insecure implementation lacking input sanitization
function processInput(userInput) {
    // Fails to validate bounds or escape special characters
    const result = vulnerableCoreEngine.execute(userInput); 
    return result;
}

Secure Code Example (Remediated)

// Secured implementation using parameterized logic and strict typing
function processInput(userInput) {
    if (typeof userInput !== 'string' || !isValidFormat(userInput)) {
        throw new Error("Invalid input format");
    }
    // Execution occurs in a localized, sandboxed context
    const result = secureCoreEngine.execute(escapeHTML(userInput));
    return result;
}

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How to Fix and Mitigate CVE-2010-0211

To immediately resolve CVE-2010-0211, systems administrators and DevOps engineers should implement the following steps:

1. Apply Vendor Patches: Upgrade the affected components to their absolute latest, non-vulnerable versions immediately via your package manager or container registry.
2. Network Filtering: Implement WAF/Edge proxy rules to filter anomalous requests containing the known payload signature.
3. Audit Access Logs: Investigate historical network access logs over the past 90 days for indicators of compromise (IoC) related to this attack surface.

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Frequently Asked Questions (FAQ)

Who discovered CVE-2010-0211?

This vulnerability is tracked globally by MITRE and the National Vulnerability Database (NVD). For official US government indexing, please reference the NVD details for CVE-2010-0211.

Is there a patch available for CVE-2010-0211?

Yes. It is critical to consult the official vendor advisories for CVE-2010-0211 affected components to apply the exact patch version required for your environment.

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Defending with Precogs AI

Precogs Security Agents can automatically triage and defend against this vulnerability class via:

• Real-time SAST & DAST pipelines integrating into the CI/CD pipeline.
• Automatic pull requests (AutoFix) resolving configuration drifts and dependency mismatches before production launch.