Vulnerability-Lookup

OESA-2023-1431 (CVE-2022-4304)

Vulnerability from osv_openeuler – Published: 2023-07-15 11:05 – Updated: 2026-08-06 11:05 – Source website

Summary

edk2 security update

Details

EDK II is a modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications.

Security Fix(es):

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.(CVE-2022-4304)

Severity

5.9 (Medium)


                    
                      CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2022-4304	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "edk2-debuginfo-202011-12.oe2203sp1.aarch64.rpm",
          "edk2-devel-202011-12.oe2203sp1.aarch64.rpm",
          "edk2-debugsource-202011-12.oe2203sp1.aarch64.rpm"
        ],
        "noarch": [
          "edk2-help-202011-12.oe2203sp1.noarch.rpm",
          "python3-edk2-devel-202011-12.oe2203sp1.noarch.rpm",
          "edk2-aarch64-202011-12.oe2203sp1.noarch.rpm",
          "edk2-ovmf-202011-12.oe2203sp1.noarch.rpm"
        ],
        "src": [
          "edk2-202011-12.oe2203sp1.src.rpm"
        ],
        "x86_64": [
          "edk2-debugsource-202011-12.oe2203sp1.x86_64.rpm",
          "edk2-devel-202011-12.oe2203sp1.x86_64.rpm",
          "edk2-debuginfo-202011-12.oe2203sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP1",
        "name": "edk2",
        "purl": "pkg:rpm/openEuler/edk2\u0026distro=openEuler-22.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "202011-12.oe2203sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "EDK II is a modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications. \n\nSecurity Fix(es):\n\nA 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.(CVE-2022-4304)",
  "id": "OESA-2023-1431",
  "modified": "2026-08-06T11:05:53Z",
  "published": "2023-07-15T11:05:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1431"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-4304"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "edk2 security update",
  "upstream": [
    "CVE-2022-4304"
  ]
}

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

Vulnerability from cvelistv5 – Published: 2023-02-08 19:04 – Updated: 2025-11-04 19:14

Title

Timing Oracle in RSA Decryption

Summary

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 · CISA-ADP (v2.0.3)

Decision recorded 2025-03-06 15:57 UTC

CWE

timing based side channel attack
CWE-203 - Observable Discrepancy

Assigner

openssl mitre root

References

3 references

URL	Tags
https://www.openssl.org/news/secadv/20230207.txt	vendor-advisory
https://security.gentoo.org/glsa/202402-08
https://psirt.global.sonicwall.com/vuln-detail/SN…

Impacted products

1 product

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)

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

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T19:14:12.161Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "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"
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      ],
      "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"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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OESA-2023-1431 (CVE-2022-4304)

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

Tags

Sightings

Nomenclature

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