CVE-2022-4304 (GCVE-0-2022-4304)

Vulnerability from cvelistv5 – Published: 2023-02-08 19:04 – Updated: 2025-11-04 19:14
VLAI
Title
Timing Oracle in RSA Decryption
Summary
A timing based side channel exists in the OpenSSL RSA Decryption implementation which could be sufficient to recover a plaintext across a network in a Bleichenbacher style attack. To achieve a successful decryption an attacker would have to be able to send a very large number of trial messages for decryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5, RSA-OEAP and RSASVE. For example, in a TLS connection, RSA is commonly used by a client to send an encrypted pre-master secret to the server. An attacker that had observed a genuine connection between a client and a server could use this flaw to send trial messages to the server and record the time taken to process them. After a sufficiently large number of messages the attacker could recover the pre-master secret used for the original connection and thus be able to decrypt the application data sent over that connection.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • timing based side channel attack
  • CWE-203 - Observable Discrepancy
Assigner
References
Impacted products
Vendor Product Version
OpenSSL OpenSSL Affected: 3.0.0 , < 3.0.8 (semver)
Affected: 1.1.1 , < 1.1.1t (custom)
Affected: 1.0.2 , < 1.0.2zg (custom)
Create a notification for this product.
Date Public
2023-02-07 00:00
Credits
Hubert Kario from RedHat Dmitry Belyavsky from RedHat Hubert Kario from RedHat
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T19:14:12.161Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "OpenSSL Advisory",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://www.openssl.org/news/secadv/20230207.txt"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202402-08"
          },
          {
            "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0003"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "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"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2022-4304",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-06T15:57:19.589862Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-203",
                "description": "CWE-203 Observable Discrepancy",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-08-27T20:32:52.408Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "OpenSSL",
          "vendor": "OpenSSL",
          "versions": [
            {
              "lessThan": "3.0.8",
              "status": "affected",
              "version": "3.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.1.1t",
              "status": "affected",
              "version": "1.1.1",
              "versionType": "custom"
            },
            {
              "lessThan": "1.0.2zg",
              "status": "affected",
              "version": "1.0.2",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "user": "00000000-0000-4000-9000-000000000000",
          "value": "Hubert Kario from RedHat"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "user": "00000000-0000-4000-9000-000000000000",
          "value": "Dmitry Belyavsky from RedHat"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "user": "00000000-0000-4000-9000-000000000000",
          "value": "Hubert Kario from RedHat"
        }
      ],
      "datePublic": "2023-02-07T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "A timing based side channel exists in the OpenSSL RSA Decryption implementation\u003cbr\u003ewhich could be sufficient to recover a plaintext across a network in a\u003cbr\u003eBleichenbacher style attack. To achieve a successful decryption an attacker\u003cbr\u003ewould have to be able to send a very large number of trial messages for\u003cbr\u003edecryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5,\u003cbr\u003eRSA-OEAP and RSASVE.\u003cbr\u003e\u003cbr\u003eFor example, in a TLS connection, RSA is commonly used by a client to send an\u003cbr\u003eencrypted pre-master secret to the server. An attacker that had observed a\u003cbr\u003egenuine connection between a client and a server could use this flaw to send\u003cbr\u003etrial messages to the server and record the time taken to process them. After a\u003cbr\u003esufficiently large number of messages the attacker could recover the pre-master\u003cbr\u003esecret used for the original connection and thus be able to decrypt the\u003cbr\u003eapplication data sent over that connection.\u003cbr\u003e\u003cbr\u003e"
            }
          ],
          "value": "A timing based side channel exists in the OpenSSL RSA Decryption implementation\nwhich could be sufficient to recover a plaintext across a network in a\nBleichenbacher style attack. To achieve a successful decryption an attacker\nwould have to be able to send a very large number of trial messages for\ndecryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5,\nRSA-OEAP and RSASVE.\n\nFor example, in a TLS connection, RSA is commonly used by a client to send an\nencrypted pre-master secret to the server. An attacker that had observed a\ngenuine connection between a client and a server could use this flaw to send\ntrial messages to the server and record the time taken to process them. After a\nsufficiently large number of messages the attacker could recover the pre-master\nsecret used for the original connection and thus be able to decrypt the\napplication data sent over that connection."
        }
      ],
      "metrics": [
        {
          "format": "other",
          "other": {
            "content": {
              "text": "MODERATE"
            },
            "type": "https://www.openssl.org/policies/secpolicy.html"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "timing based side channel attack",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-02-04T09:06:45.004Z",
        "orgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
        "shortName": "openssl"
      },
      "references": [
        {
          "name": "OpenSSL Advisory",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.openssl.org/news/secadv/20230207.txt"
        },
        {
          "url": "https://security.gentoo.org/glsa/202402-08"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Timing Oracle in RSA Decryption",
      "x_generator": {
        "engine": "Vulnogram 0.1.0-dev"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
    "assignerShortName": "openssl",
    "cveId": "CVE-2022-4304",
    "datePublished": "2023-02-08T19:04:28.890Z",
    "dateReserved": "2022-12-06T10:38:40.463Z",
    "dateUpdated": "2025-11-04T19:14:12.161Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-4304",
      "date": "2026-06-11",
      "epss": "0.00218",
      "percentile": "0.44493"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"1.0.2\", \"versionEndExcluding\": \"1.0.2zg\", \"matchCriteriaId\": \"70985D55-A574-4151-B451-4D500CBFC29A\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"1.1.1\", \"versionEndExcluding\": \"1.1.1t\", \"matchCriteriaId\": \"DE0061D6-8F81-45D3-B254-82A94915FD08\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"3.0.0\", \"versionEndExcluding\": \"3.0.8\", \"matchCriteriaId\": \"A6DC5D88-4E99-48F2-8892-610ACA9B5B86\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:stormshield:endpoint_security:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"7.2.40\", \"matchCriteriaId\": \"166DF690-041D-4585-A9DA-A6CC72A6A7F3\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:stormshield:sslvpn:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"3.2.1\", \"matchCriteriaId\": \"DA7E0DD2-D62E-4735-A2C9-47C463BE4AA9\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"2.7.0\", \"versionEndExcluding\": \"2.7.11\", \"matchCriteriaId\": \"27B77023-4983-4D33-9824-A120A5ED31BD\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"2.8.0\", \"versionEndExcluding\": \"3.7.34\", \"matchCriteriaId\": \"8BD398C8-BC0B-4ED5-B71A-B9C6D8F63659\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"3.8.0\", \"versionEndExcluding\": \"3.11.22\", \"matchCriteriaId\": \"31B59634-B59C-4391-96D3-200A86A6CE3E\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.0.0\", \"versionEndExcluding\": \"4.3.16\", \"matchCriteriaId\": \"F7794B42-8235-4C75-866F-5D0A405F0989\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.4.0\", \"versionEndExcluding\": \"4.6.3\", \"matchCriteriaId\": \"C8A23A5D-928A-4225-9C93-31E5DFE215A7\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"A timing based side channel exists in the OpenSSL RSA Decryption implementation\\nwhich could be sufficient to recover a plaintext across a network in a\\nBleichenbacher style attack. To achieve a successful decryption an attacker\\nwould have to be able to send a very large number of trial messages for\\ndecryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5,\\nRSA-OEAP and RSASVE.\\n\\nFor example, in a TLS connection, RSA is commonly used by a client to send an\\nencrypted pre-master secret to the server. An attacker that had observed a\\ngenuine connection between a client and a server could use this flaw to send\\ntrial messages to the server and record the time taken to process them. After a\\nsufficiently large number of messages the attacker could recover the pre-master\\nsecret used for the original connection and thus be able to decrypt the\\napplication data sent over that connection.\\n\\n\"}]",
      "id": "CVE-2022-4304",
      "lastModified": "2024-11-21T07:34:58.630",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N\", \"baseScore\": 5.9, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 2.2, \"impactScore\": 3.6}]}",
      "published": "2023-02-08T20:15:23.887",
      "references": "[{\"url\": \"https://security.gentoo.org/glsa/202402-08\", \"source\": \"openssl-security@openssl.org\"}, {\"url\": \"https://www.openssl.org/news/secadv/20230207.txt\", \"source\": \"openssl-security@openssl.org\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://security.gentoo.org/glsa/202402-08\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://www.openssl.org/news/secadv/20230207.txt\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}]",
      "sourceIdentifier": "openssl-security@openssl.org",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-203\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-4304\",\"sourceIdentifier\":\"openssl-security@openssl.org\",\"published\":\"2023-02-08T20:15:23.887\",\"lastModified\":\"2025-11-04T20:16:14.897\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A timing based side channel exists in the OpenSSL RSA Decryption implementation\\nwhich could be sufficient to recover a plaintext across a network in a\\nBleichenbacher style attack. To achieve a successful decryption an attacker\\nwould have to be able to send a very large number of trial messages for\\ndecryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5,\\nRSA-OEAP and RSASVE.\\n\\nFor example, in a TLS connection, RSA is commonly used by a client to send an\\nencrypted pre-master secret to the server. An attacker that had observed a\\ngenuine connection between a client and a server could use this flaw to send\\ntrial messages to the server and record the time taken to process them. After a\\nsufficiently large number of messages the attacker could recover the pre-master\\nsecret used for the original connection and thus be able to decrypt the\\napplication data sent over that connection.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":5.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.2,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":5.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.2,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-203\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-203\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.0.2\",\"versionEndExcluding\":\"1.0.2zg\",\"matchCriteriaId\":\"70985D55-A574-4151-B451-4D500CBFC29A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.1.1\",\"versionEndExcluding\":\"1.1.1t\",\"matchCriteriaId\":\"DE0061D6-8F81-45D3-B254-82A94915FD08\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.0.0\",\"versionEndExcluding\":\"3.0.8\",\"matchCriteriaId\":\"A6DC5D88-4E99-48F2-8892-610ACA9B5B86\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:stormshield:endpoint_security:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"7.2.40\",\"matchCriteriaId\":\"166DF690-041D-4585-A9DA-A6CC72A6A7F3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:stormshield:sslvpn:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"3.2.1\",\"matchCriteriaId\":\"DA7E0DD2-D62E-4735-A2C9-47C463BE4AA9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.7.0\",\"versionEndExcluding\":\"2.7.11\",\"matchCriteriaId\":\"27B77023-4983-4D33-9824-A120A5ED31BD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.8.0\",\"versionEndExcluding\":\"3.7.34\",\"matchCriteriaId\":\"8BD398C8-BC0B-4ED5-B71A-B9C6D8F63659\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.8.0\",\"versionEndExcluding\":\"3.11.22\",\"matchCriteriaId\":\"31B59634-B59C-4391-96D3-200A86A6CE3E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.0.0\",\"versionEndExcluding\":\"4.3.16\",\"matchCriteriaId\":\"F7794B42-8235-4C75-866F-5D0A405F0989\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.4.0\",\"versionEndExcluding\":\"4.6.3\",\"matchCriteriaId\":\"C8A23A5D-928A-4225-9C93-31E5DFE215A7\"}]}]}],\"references\":[{\"url\":\"https://security.gentoo.org/glsa/202402-08\",\"source\":\"openssl-security@openssl.org\"},{\"url\":\"https://www.openssl.org/news/secadv/20230207.txt\",\"source\":\"openssl-security@openssl.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0003\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.gentoo.org/glsa/202402-08\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.openssl.org/news/secadv/20230207.txt\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://www.openssl.org/news/secadv/20230207.txt\", \"name\": \"OpenSSL Advisory\", \"tags\": [\"vendor-advisory\", \"x_transferred\"]}, {\"url\": \"https://security.gentoo.org/glsa/202402-08\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0003\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-04T19:14:12.161Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.9, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/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\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-4304\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-03-06T15:57:19.589862Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-203\", \"description\": \"CWE-203 Observable Discrepancy\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-03-06T15:57:20.775Z\"}}], \"cna\": {\"title\": \"Timing Oracle in RSA Decryption\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"user\": \"00000000-0000-4000-9000-000000000000\", \"value\": \"Hubert Kario from RedHat\"}, {\"lang\": \"en\", \"type\": \"remediation developer\", \"user\": \"00000000-0000-4000-9000-000000000000\", \"value\": \"Dmitry Belyavsky from RedHat\"}, {\"lang\": \"en\", \"type\": \"remediation developer\", \"user\": \"00000000-0000-4000-9000-000000000000\", \"value\": \"Hubert Kario from RedHat\"}], \"metrics\": [{\"other\": {\"type\": \"https://www.openssl.org/policies/secpolicy.html\", \"content\": {\"text\": \"MODERATE\"}}, \"format\": \"other\"}], \"affected\": [{\"vendor\": \"OpenSSL\", \"product\": \"OpenSSL\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.0.0\", \"lessThan\": \"3.0.8\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"1.1.1\", \"lessThan\": \"1.1.1t\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"1.0.2\", \"lessThan\": \"1.0.2zg\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unaffected\"}], \"datePublic\": \"2023-02-07T00:00:00.000Z\", \"references\": [{\"url\": \"https://www.openssl.org/news/secadv/20230207.txt\", \"name\": \"OpenSSL Advisory\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://security.gentoo.org/glsa/202402-08\"}], \"x_generator\": {\"engine\": \"Vulnogram 0.1.0-dev\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"A timing based side channel exists in the OpenSSL RSA Decryption implementation\\nwhich could be sufficient to recover a plaintext across a network in a\\nBleichenbacher style attack. To achieve a successful decryption an attacker\\nwould have to be able to send a very large number of trial messages for\\ndecryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5,\\nRSA-OEAP and RSASVE.\\n\\nFor example, in a TLS connection, RSA is commonly used by a client to send an\\nencrypted pre-master secret to the server. An attacker that had observed a\\ngenuine connection between a client and a server could use this flaw to send\\ntrial messages to the server and record the time taken to process them. After a\\nsufficiently large number of messages the attacker could recover the pre-master\\nsecret used for the original connection and thus be able to decrypt the\\napplication data sent over that connection.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"A timing based side channel exists in the OpenSSL RSA Decryption implementation\u003cbr\u003ewhich could be sufficient to recover a plaintext across a network in a\u003cbr\u003eBleichenbacher style attack. To achieve a successful decryption an attacker\u003cbr\u003ewould have to be able to send a very large number of trial messages for\u003cbr\u003edecryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5,\u003cbr\u003eRSA-OEAP and RSASVE.\u003cbr\u003e\u003cbr\u003eFor example, in a TLS connection, RSA is commonly used by a client to send an\u003cbr\u003eencrypted pre-master secret to the server. An attacker that had observed a\u003cbr\u003egenuine connection between a client and a server could use this flaw to send\u003cbr\u003etrial messages to the server and record the time taken to process them. After a\u003cbr\u003esufficiently large number of messages the attacker could recover the pre-master\u003cbr\u003esecret used for the original connection and thus be able to decrypt the\u003cbr\u003eapplication data sent over that connection.\u003cbr\u003e\u003cbr\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"description\": \"timing based side channel attack\"}]}], \"providerMetadata\": {\"orgId\": \"3a12439a-ef3a-4c79-92e6-6081a721f1e5\", \"shortName\": \"openssl\", \"dateUpdated\": \"2024-02-04T09:06:45.004Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-4304\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-04T19:14:12.161Z\", \"dateReserved\": \"2022-12-06T10:38:40.463Z\", \"assignerOrgId\": \"3a12439a-ef3a-4c79-92e6-6081a721f1e5\", \"datePublished\": \"2023-02-08T19:04:28.890Z\", \"assignerShortName\": \"openssl\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.