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        "cveId": "CVE-2023-6992",
        "assignerOrgId": "a22f1246-ba21-4bb4-a601-ad51614c1513",
        "state": "PUBLISHED",
        "assignerShortName": "cloudflare",
        "dateReserved": "2023-12-20T10:48:40.396Z",
        "datePublished": "2024-01-04T11:11:07.558Z",
        "dateUpdated": "2024-09-06T18:16:58.376Z"
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    "containers": {
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            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "packageName": "zlib",
                    "platforms": [
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                    "product": "zlib",
                    "repo": "https://github.com/cloudflare/zlib",
                    "vendor": "Cloudflare",
                    "versions": [
                        {
                            "lessThan": "8352d10",
                            "status": "affected",
                            "version": "0",
                            "versionType": "git"
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            "credits": [
                {
                    "lang": "en",
                    "type": "finder",
                    "user": "00000000-0000-4000-9000-000000000000",
                    "value": "Martin Schwarzl"
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            ],
            "descriptions": [
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                            "type": "text/html",
                            "value": "<span style=\"background-color: rgb(255, 255, 255);\">Cloudflare version of zlib library was found to be vulnerable to memory corruption issues affecting the deflation algorithm implementation (deflate.c). The issues resulted from improper input validation and heap-based buffer overflow.</span><br><span style=\"background-color: rgb(255, 255, 255);\">A local attacker could exploit the problem during compression using a crafted malicious file potentially leading to denial of service of the software.</span><br><span style=\"background-color: rgb(255, 255, 255);\">Patches: The issue has been patched in commit <a target=\"_blank\" rel=\"nofollow\" href=\"https://github.com/cloudflare/zlib/commit/8352d108c05db1bdc5ac3bdf834dad641694c13c\"><tt>8352d10</tt></a>. The upstream repository is not affected.</span><br>"
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                    ],
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                    "capecId": "CAPEC-100",
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                            "lang": "en",
                            "value": "CAPEC-100 Overflow Buffers"
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                            "value": "CAPEC-17 Using Malicious Files"
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                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "LOCAL",
                        "availabilityImpact": "LOW",
                        "baseScore": 4,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
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                            "cweId": "CWE-20",
                            "description": "CWE-20 Improper Input Validation",
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                },
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                        {
                            "cweId": "CWE-122",
                            "description": "CWE-122: Heap-based Buffer Overflow",
                            "lang": "en",
                            "type": "CWE"
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                            "cweId": "CWE-126",
                            "description": "CWE-126: Buffer Over-read",
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            "providerMetadata": {
                "orgId": "a22f1246-ba21-4bb4-a601-ad51614c1513",
                "shortName": "cloudflare",
                "dateUpdated": "2024-01-04T11:14:15.933Z"
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            "references": [
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                    "url": "https://github.com/cloudflare/zlib"
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                    "url": "https://github.com/cloudflare/zlib/security/advisories/GHSA-vww9-j87r-4cqh"
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            "source": {
                "discovery": "INTERNAL"
            },
            "title": "Memory corruption issues is Cloudflare zlib implementation",
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                        "url": "https://github.com/cloudflare/zlib"
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                        "url": "https://github.com/cloudflare/zlib/security/advisories/GHSA-vww9-j87r-4cqh"
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                            "type": "ssvc",
                            "content": {
                                "timestamp": "2024-03-12T16:53:31.056293Z",
                                "id": "CVE-2023-6992",
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