Vulnerability-Lookup

OESA-2021-1358 (CVE-2021-38575)

Vulnerability from osv_openeuler – Published: 2021-09-30 11:04 – Updated: 2026-08-06 11:04 – 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 flaw was found in edk2. Missing checks in the IScsiHexToBin function in NetworkPkg/IScsiDxe lead to a buffer overflow allowing a remote attacker, who can inject himself in the communication between edk2 and the iSCSI target, to write arbitrary data to any address in the edk2 firmware and potentially execute code. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.(CVE-2021-38575)

Severity

7.8 (High)


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

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-38575	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "edk2-devel-202002-6.oe1.aarch64.rpm",
          "edk2-debugsource-202002-6.oe1.aarch64.rpm",
          "edk2-debuginfo-202002-6.oe1.aarch64.rpm"
        ],
        "noarch": [
          "python3-edk2-devel-202002-6.oe1.noarch.rpm",
          "edk2-help-202002-6.oe1.noarch.rpm",
          "edk2-aarch64-202002-6.oe1.noarch.rpm",
          "edk2-ovmf-202002-6.oe1.noarch.rpm"
        ],
        "src": [
          "edk2-202002-6.oe1.src.rpm"
        ],
        "x86_64": [
          "edk2-devel-202002-6.oe1.x86_64.rpm",
          "edk2-debugsource-202002-6.oe1.x86_64.rpm",
          "edk2-debuginfo-202002-6.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "edk2",
        "purl": "pkg:rpm/openEuler/edk2\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "202002-6.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "edk2-debugsource-202002-6.oe1.aarch64.rpm",
          "edk2-devel-202002-6.oe1.aarch64.rpm",
          "edk2-debuginfo-202002-6.oe1.aarch64.rpm"
        ],
        "noarch": [
          "python3-edk2-devel-202002-6.oe1.noarch.rpm",
          "edk2-help-202002-6.oe1.noarch.rpm",
          "edk2-aarch64-202002-6.oe1.noarch.rpm",
          "edk2-ovmf-202002-6.oe1.noarch.rpm"
        ],
        "src": [
          "edk2-202002-6.oe1.src.rpm"
        ],
        "x86_64": [
          "edk2-debuginfo-202002-6.oe1.x86_64.rpm",
          "edk2-devel-202002-6.oe1.x86_64.rpm",
          "edk2-debugsource-202002-6.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP2",
        "name": "edk2",
        "purl": "pkg:rpm/openEuler/edk2\u0026distro=openEuler-20.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "202002-6.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "EDK II is a modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications.\r\n\r\nSecurity Fix(es):\r\n\r\nA flaw was found in edk2. Missing checks in the IScsiHexToBin function in NetworkPkg/IScsiDxe lead to a buffer overflow allowing a remote attacker, who can inject himself in the communication between edk2 and the iSCSI target, to write arbitrary data to any address in the edk2 firmware and potentially execute code. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.(CVE-2021-38575)",
  "id": "OESA-2021-1358",
  "modified": "2026-08-06T11:04:37Z",
  "published": "2021-09-30T11:04:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1358"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-38575"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "edk2 security update",
  "upstream": [
    "CVE-2021-38575"
  ]
}

CVE-2021-38575 (GCVE-0-2021-38575)

Vulnerability from cvelistv5 – Published: 2021-12-01 00:00 – Updated: 2025-11-03 19:26

Summary

NetworkPkg/IScsiDxe has remotely exploitable buffer overflows.

Severity

No CVSS data available.

CWE

CWE-124 - A case of CWE-124, CWE-680, and CWE-252 is occurring in NetworkPkg/IScsiDxe.

Assigner

TianoCore mitre root

References

3 references

URL	Tags
https://bugzilla.tianocore.org/show_bug.cgi?id=3356
https://www.insyde.com/security-pledge/SA-2023025
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

1 product

Vendor	Product	Version
TianoCore	EDK II	Affected: unspecified , ≤ edk2-stable202105 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T19:26:13.152Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugzilla.tianocore.org/show_bug.cgi?id=3356"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.insyde.com/security-pledge/SA-2023025"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/06/msg00007.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "EDK II",
          "vendor": "TianoCore",
          "versions": [
            {
              "lessThanOrEqual": "edk2-stable202105",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "NetworkPkg/IScsiDxe has remotely exploitable buffer overflows."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-124",
              "description": "A case of CWE-124, CWE-680, and CWE-252 is occurring in NetworkPkg/IScsiDxe.",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-07-23T00:00:00.000Z",
        "orgId": "65518388-201a-4f93-8712-366d21fe8d2c",
        "shortName": "TianoCore"
      },
      "references": [
        {
          "url": "https://bugzilla.tianocore.org/show_bug.cgi?id=3356"
        },
        {
          "url": "https://www.insyde.com/security-pledge/SA-2023025"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "65518388-201a-4f93-8712-366d21fe8d2c",
    "assignerShortName": "TianoCore",
    "cveId": "CVE-2021-38575",
    "datePublished": "2021-12-01T00:00:00.000Z",
    "dateReserved": "2021-08-11T00:00:00.000Z",
    "dateUpdated": "2025-11-03T19:26:13.152Z",
    "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.

Detection rules are retrieved from Rulezet.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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OESA-2021-1358 (CVE-2021-38575)

CVE-2021-38575 (GCVE-0-2021-38575)

Tags

Sightings

Nomenclature

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