Show plain JSON{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-6935", "assignerOrgId": "50d2cd11-d01a-48ed-9441-5bfce9d63b27", "state": "PUBLISHED", "assignerShortName": "wolfSSL", "dateReserved": "2023-12-18T22:00:54.166Z", "datePublished": "2024-02-09T22:25:04.663Z", "dateUpdated": "2024-08-02T08:42:08.533Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "modules": ["RSA"], "product": "wolfSSL", "repo": "https://github.com/wolfSSL/wolfssl", "vendor": "wolfSSL", "versions": [{"lessThanOrEqual": "5.6.4", "status": "affected", "version": "3.12.2", "versionType": "release bundle"}]}], "configurations": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "To be vulnerable, static RSA cipher suites must be enabled with<br><b><span style=\"background-color: transparent;\">CFLAGS=\"-DWOLFSSL_STATIC_RSA\"</span></b><br><br>These have been disabled by default since wolfSSL 3.6.6. The default configuration of wolfSSL is not vulnerable."}], "value": "To be vulnerable, static RSA cipher suites must be enabled with\nCFLAGS=\"-DWOLFSSL_STATIC_RSA\"\n\nThese have been disabled by default since wolfSSL 3.6.6. The default configuration of wolfSSL is not vulnerable."}], "credits": [{"lang": "en", "type": "finder", "user": "00000000-0000-4000-9000-000000000000", "value": "Hubert Kario"}, {"lang": "en", "type": "tool", "user": "00000000-0000-4000-9000-000000000000", "value": "tlsfuzzer"}], "datePublic": "2023-12-20T00:00:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "wolfSSL SP Math All RSA implementation is vulnerable to the Marvin Attack, new variation of a timing <span style=\"background-color: rgb(255, 255, 255);\">Bleichenbacher</span> style attack, when built with the following options to configure:<br><br>--enable-all CFLAGS=\"-DWOLFSSL_STATIC_RSA\"<br><br>The define \u201cWOLFSSL_STATIC_RSA\u201d enables static RSA cipher suites, which is not recommended, and has been disabled by default since wolfSSL 3.6.6. Therefore the default build since 3.6.6, even with \"--enable-all\", is not vulnerable to the Marvin Attack. The vulnerability is specific to static RSA cipher suites, and expected to be padding-independent.<br><br>The vulnerability allows an attacker to decrypt ciphertexts and forge signatures after probing with a large number of test observations. However the server\u2019s private key is not exposed.<br>"}], "value": "wolfSSL SP Math All RSA implementation is vulnerable to the Marvin Attack, new variation of a timing Bleichenbacher style attack, when built with the following options to configure:\n\n--enable-all CFLAGS=\"-DWOLFSSL_STATIC_RSA\"\n\nThe define \u201cWOLFSSL_STATIC_RSA\u201d enables static RSA cipher suites, which is not recommended, and has been disabled by default since wolfSSL 3.6.6.\u00a0 Therefore the default build since 3.6.6, even with \"--enable-all\", is not vulnerable to the Marvin Attack. The vulnerability is specific to static RSA cipher suites, and expected to be padding-independent.\n\nThe vulnerability allows an attacker to decrypt ciphertexts and forge signatures after probing with a large number of test observations. However the server\u2019s private key is not exposed.\n"}], "impacts": [{"capecId": "CAPEC-463", "descriptions": [{"lang": "en", "value": "CAPEC-463 Padding Oracle Crypto Attack"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-203", "description": "CWE-203 Observable Discrepancy", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "50d2cd11-d01a-48ed-9441-5bfce9d63b27", "shortName": "wolfSSL", "dateUpdated": "2024-02-09T22:25:04.663Z"}, "references": [{"tags": ["technical-description", "third-party-advisory"], "url": "https://people.redhat.com/~hkario/marvin/"}, {"url": "https://www.wolfssl.com/docs/security-vulnerabilities/"}], "solutions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Upgrade wolfSSL to 5.6.6"}], "value": "Upgrade wolfSSL to 5.6.6"}], "source": {"discovery": "EXTERNAL"}, "title": "Marvin Attack vulnerability in SP Math All RSA", "workarounds": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<ul><li>Do not enable static RSA cipher suites</li><li>Use TLS 1.3</li><li>Build with --enable-sp, or --enable-sp-asm</li></ul>"}], "value": " * Do not enable static RSA cipher suites\n * Use TLS 1.3\n * Build with --enable-sp, or --enable-sp-asm\n\n\n"}], "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-6935", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-02-12T12:48:11.895530Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:17:16.476Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T08:42:08.533Z"}, "title": "CVE Program Container", "references": [{"tags": ["technical-description", "third-party-advisory", "x_transferred"], "url": "https://people.redhat.com/~hkario/marvin/"}, {"url": "https://www.wolfssl.com/docs/security-vulnerabilities/", "tags": ["x_transferred"]}]}]}} 
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