{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"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"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","packageName":"zlib","platforms":["C"],"product":"zlib","repo":"https://github.com/cloudflare/zlib","vendor":"Cloudflare","versions":[{"lessThan":"8352d10","status":"affected","version":"0","versionType":"git"}]}],"credits":[{"lang":"en","type":"finder","user":"00000000-0000-4000-9000-000000000000","value":"Martin Schwarzl"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"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>"}],"value":"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.\nA local attacker could exploit the problem during compression using a crafted malicious file potentially leading to denial of service of the software.\nPatches: The issue has been patched in commit  8352d10 https://github.com/cloudflare/zlib/commit/8352d108c05db1bdc5ac3bdf834dad641694c13c . The upstream repository is not affected.\n"}],"impacts":[{"capecId":"CAPEC-100","descriptions":[{"lang":"en","value":"CAPEC-100 Overflow Buffers"}]},{"capecId":"CAPEC-17","descriptions":[{"lang":"en","value":"CAPEC-17 Using Malicious Files"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"LOW","baseScore":4,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","description":"CWE-20 Improper Input Validation","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-122","description":"CWE-122: Heap-based Buffer Overflow","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-126","description":"CWE-126: Buffer Over-read","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"a22f1246-ba21-4bb4-a601-ad51614c1513","shortName":"cloudflare","dateUpdated":"2024-01-04T11:14:15.933Z"},"references":[{"tags":["product"],"url":"https://github.com/cloudflare/zlib"},{"tags":["vendor-advisory"],"url":"https://github.com/cloudflare/zlib/security/advisories/GHSA-vww9-j87r-4cqh"}],"source":{"discovery":"INTERNAL"},"title":"Memory corruption issues is Cloudflare zlib implementation","x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T08:50:07.582Z"},"title":"CVE Program Container","references":[{"tags":["product","x_transferred"],"url":"https://github.com/cloudflare/zlib"},{"tags":["vendor-advisory","x_transferred"],"url":"https://github.com/cloudflare/zlib/security/advisories/GHSA-vww9-j87r-4cqh"}]},{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-03-12T16:53:31.056293Z","id":"CVE-2023-6992","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-09-06T18:16:58.376Z"}}]}}