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{"id": "RH:CVE-2018-15836", "vendorId": null, "type": "redhatcve", "bulletinFamily": "info", "title": "CVE-2018-15836", "description": "In verify_signed_hash() in lib/liboswkeys/signatures.c in Openswan before 2.6.50.1, the RSA implementation does not verify the value of padding string during PKCS#1 v1.5 signature verification. Consequently, a remote attacker can forge signatures when small public exponents are being used. IKEv2 signature verification is affected when RAW RSA keys are used.\n", "published": "2018-09-28T03:49:03", "modified": "2023-02-01T03:55:49", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:P/A:N"}, "cvss2": {"cvssV2": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "availabilityImpact": "NONE", "baseScore": 5.0}, "severity": "MEDIUM", "exploitabilityScore": 10.0, "impactScore": 2.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "cvss3": {"cvssV3": {"version": "3.0", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 3.6}, "href": "https://access.redhat.com/security/cve/cve-2018-15836", "reporter": "redhat.com", "references": ["https://bugzilla.redhat.com/show_bug.cgi?id=1618861"], "cvelist": ["CVE-2018-15836"], "immutableFields": [], "lastseen": "2023-02-01T05:21:50", "viewCount": 4, "enchantments": {"dependencies": {"references": [{"type": "cve", "idList": ["CVE-2018-15836"]}, {"type": "ubuntucve", "idList": ["UB:CVE-2018-15836"]}], "rev": 4}, "score": {"value": 4.2, "vector": "NONE"}, "backreferences": {"references": [{"type": "cve", "idList": ["CVE-2018-15836"]}, {"type": "ubuntucve", "idList": ["UB:CVE-2018-15836"]}]}, "exploitation": null, "vulnersScore": 4.2}, "_state": {"dependencies": 1675229149, "score": 1675228954}, "_internal": {"score_hash": "4c1ad996fb124c3b82c8ce9dc4a7ba7d"}, "vendorCvss": {"score": "6.5", "vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"}}

{"ubuntucve": [{"lastseen": "2022-08-04T13:46:10", "description": "In verify_signed_hash() in lib/liboswkeys/signatures.c in Openswan before\n2.6.50.1, the RSA implementation does not verify the value of padding\nstring during PKCS#1 v1.5 signature verification. Consequently, a remote\nattacker can forge signatures when small public exponents are being used.\nIKEv2 signature verification is affected when RAW RSA keys are used.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2018-09-26T00:00:00", "type": "ubuntucve", "title": "CVE-2018-15836", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-15836"], "modified": "2018-09-26T00:00:00", "id": "UB:CVE-2018-15836", "href": "https://ubuntu.com/security/CVE-2018-15836", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:P/A:N"}}], "cve": [{"lastseen": "2022-03-23T13:48:22", "description": "In verify_signed_hash() in lib/liboswkeys/signatures.c in Openswan before 2.6.50.1, the RSA implementation does not verify the value of padding string during PKCS#1 v1.5 signature verification. Consequently, a remote attacker can forge signatures when small public exponents are being used. IKEv2 signature verification is affected when RAW RSA keys are used.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2018-09-26T21:29:00", "type": "cve", "title": "CVE-2018-15836", "cwe": ["CWE-347"], "bulletinFamily": "NVD", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-15836"], "modified": "2019-01-10T17:52:00", "cpe": [], "id": "CVE-2018-15836", "href": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-15836", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:P/A:N"}, "cpe23": []}]}