CVE-2018-12885

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://medium.com/coinmonks/get-legendary-items-by-breaking-pnrg-of-mycyptochamp-an-ethereum-online-game-cve-2018-12855-6e6beb41b8df", "name": "https://medium.com/coinmonks/get-legendary-items-by-breaking-pnrg-of-mycyptochamp-an-ethereum-online-game-cve-2018-12855-6e6beb41b8df", "tags": ["Exploit", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://etherscan.io/address/0xa44e464b13280340904ffef0a65b8a0033460430", "name": "https://etherscan.io/address/0xa44e464b13280340904ffef0a65b8a0033460430", "tags": ["Third Party Advisory"], "refsource": "MISC"}, {"url": "https://etherscan.io/address/0x689FB61845488297dfE7586E5f7956475955d2Dc", "name": "https://etherscan.io/address/0x689FB61845488297dfE7586E5f7956475955d2Dc", "tags": ["Third Party Advisory"], "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "The randMod() function of the smart contract implementation for MyCryptoChamp, an Ethereum game, generates a random value with publicly readable variables such as the current block information and a private variable, (which can be read with a getStorageAt call). Therefore, attackers can get powerful champs/items and get rewards."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-338"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2018-12885", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 4.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.2}}, "publishedDate": "2018-08-07T15:29Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:mycryptochamp:mycryptochamp:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2018-10-18T14:40Z"}