Vulnerability-Lookup

oesa-2026-1613

Vulnerability from osv_openeuler

Published

2026-03-15 07:31

Modified

2026-03-15 07:31

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):

Issue summary: When using the low-level OCB API directly with AES-NI or other hardware-accelerated code paths, inputs whose length is not a multiple of 16 bytes can leave the final partial block unencrypted and unauthenticated. Impact summary: The trailing 1-15 bytes of a message may be exposed in cleartext on encryption and are not covered by the authentication tag, allowing an attacker to read or tamper with those bytes without detection. The low-level OCB encrypt and decrypt routines in the hardware-accelerated stream path process full 16-byte blocks but do not advance the input/output pointers. The subsequent tail-handling code then operates on the original base pointers, effectively reprocessing the beginning of the buffer while leaving the actual trailing bytes unprocessed. The authentication checksum also excludes the true tail bytes. However, typical OpenSSL consumers using EVP are not affected because the higher-level EVP and provider OCB implementations split inputs so that full blocks and trailing partial blocks are processed in separate calls, avoiding the problematic code path. Additionally, TLS does not use OCB ciphersuites. The vulnerability only affects applications that call the low-level CRYPTO_ocb128_encrypt() or CRYPTO_ocb128_decrypt() functions directly with non-block-aligned lengths in a single call on hardware-accelerated builds. For these reasons the issue was assessed as Low severity. The FIPS modules in 3.6, 3.5, 3.4, 3.3, 3.2, 3.1 and 3.0 are not affected by this issue, as OCB mode is not a FIPS-approved algorithm. OpenSSL 3.6, 3.5, 3.4, 3.3, 3.0 and 1.1.1 are vulnerable to this issue. OpenSSL 1.0.2 is not affected by this issue.(CVE-2025-69418)

Severity

4.0 (Medium)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-69418	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "edk2-debuginfo-202308-33.oe2403sp3.aarch64.rpm",
          "edk2-debugsource-202308-33.oe2403sp3.aarch64.rpm",
          "edk2-devel-202308-33.oe2403sp3.aarch64.rpm"
        ],
        "noarch": [
          "edk2-aarch64-202308-33.oe2403sp3.noarch.rpm",
          "edk2-help-202308-33.oe2403sp3.noarch.rpm",
          "edk2-ovmf-202308-33.oe2403sp3.noarch.rpm",
          "python3-edk2-devel-202308-33.oe2403sp3.noarch.rpm"
        ],
        "src": [
          "edk2-202308-33.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "edk2-debuginfo-202308-33.oe2403sp3.x86_64.rpm",
          "edk2-debugsource-202308-33.oe2403sp3.x86_64.rpm",
          "edk2-devel-202308-33.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "edk2",
        "purl": "pkg:rpm/openEuler/edk2\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "202308-33.oe2403sp3"
            }
          ],
          "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.\r\n\r\nSecurity Fix(es):\n\nIssue summary: When using the low-level OCB API directly with AES-NI or\u0026lt;br\u0026gt;other hardware-accelerated code paths, inputs whose length is not a multiple\u0026lt;br\u0026gt;of 16 bytes can leave the final partial block unencrypted and unauthenticated.\u0026lt;br\u0026gt;\u0026lt;br\u0026gt;Impact summary: The trailing 1-15 bytes of a message may be exposed in\u0026lt;br\u0026gt;cleartext on encryption and are not covered by the authentication tag,\u0026lt;br\u0026gt;allowing an attacker to read or tamper with those bytes without detection.\u0026lt;br\u0026gt;\u0026lt;br\u0026gt;The low-level OCB encrypt and decrypt routines in the hardware-accelerated\u0026lt;br\u0026gt;stream path process full 16-byte blocks but do not advance the input/output\u0026lt;br\u0026gt;pointers. The subsequent tail-handling code then operates on the original\u0026lt;br\u0026gt;base pointers, effectively reprocessing the beginning of the buffer while\u0026lt;br\u0026gt;leaving the actual trailing bytes unprocessed. The authentication checksum\u0026lt;br\u0026gt;also excludes the true tail bytes.\u0026lt;br\u0026gt;\u0026lt;br\u0026gt;However, typical OpenSSL consumers using EVP are not affected because the\u0026lt;br\u0026gt;higher-level EVP and provider OCB implementations split inputs so that full\u0026lt;br\u0026gt;blocks and trailing partial blocks are processed in separate calls, avoiding\u0026lt;br\u0026gt;the problematic code path. Additionally, TLS does not use OCB ciphersuites.\u0026lt;br\u0026gt;The vulnerability only affects applications that call the low-level\u0026lt;br\u0026gt;CRYPTO_ocb128_encrypt() or CRYPTO_ocb128_decrypt() functions directly with\u0026lt;br\u0026gt;non-block-aligned lengths in a single call on hardware-accelerated builds.\u0026lt;br\u0026gt;For these reasons the issue was assessed as Low severity.\u0026lt;br\u0026gt;\u0026lt;br\u0026gt;The FIPS modules in 3.6, 3.5, 3.4, 3.3, 3.2, 3.1 and 3.0 are not affected\u0026lt;br\u0026gt;by this issue, as OCB mode is not a FIPS-approved algorithm.\u0026lt;br\u0026gt;\u0026lt;br\u0026gt;OpenSSL 3.6, 3.5, 3.4, 3.3, 3.0 and 1.1.1 are vulnerable to this issue.\u0026lt;br\u0026gt;\u0026lt;br\u0026gt;OpenSSL 1.0.2 is not affected by this issue.(CVE-2025-69418)",
  "id": "OESA-2026-1613",
  "modified": "2026-03-15T07:31:24Z",
  "published": "2026-03-15T07:31:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1613"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-69418"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "edk2 security update",
  "upstream": [
    "CVE-2025-69418"
  ]
}

CVE-2025-69418 (GCVE-0-2025-69418)

Vulnerability from cvelistv5 – Published: 2026-01-27 16:01 – Updated: 2026-05-12 12:08

Title

Unauthenticated/unencrypted trailing bytes with low-level OCB function calls

Summary

Severity

4 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-29 15:06 UTC

CWE

CWE-325 - Missing Cryptographic Step

Assigner

openssl mitre root

References

7 references

URL	Tags
https://openssl-library.org/news/secadv/20260127.txt	vendor-advisory
https://github.com/openssl/openssl/commit/ed40856…	patch
https://github.com/openssl/openssl/commit/4016975…	patch
https://github.com/openssl/openssl/commit/372fc5c…	patch
https://github.com/openssl/openssl/commit/a758923…	patch
https://github.com/openssl/openssl/commit/52d23c8…	patch
https://cert-portal.siemens.com/productcert/html/…

Impacted products

2 products

Vendor	Product	Version
OpenSSL	OpenSSL	Affected: 3.6.0 , < 3.6.1 (semver) Affected: 3.5.0 , < 3.5.5 (semver) Affected: 3.4.0 , < 3.4.4 (semver) Affected: 3.3.0 , < 3.3.6 (semver) Affected: 3.0.0 , < 3.0.19 (semver) Affected: 1.1.1 , < 1.1.1ze (custom)
Siemens	SIMATIC S7-1500 TM MFP - GNU/Linux subsystem	Affected: 0 , < * (custom)

Date Public

2026-01-27 14:00

Credits

Stanislav Fort (Aisle Research) Stanislav Fort (Aisle Research)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "LOCAL",
              "availabilityImpact": "NONE",
              "baseScore": 4,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-69418",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-29T15:06:43.617751Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-29T15:07:14.052Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "affected": [
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-12T12:08:40.794Z",
          "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
          "shortName": "siemens-SADP"
        },
        "references": [
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
          }
        ],
        "x_adpType": "supplier"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "OpenSSL",
          "vendor": "OpenSSL",
          "versions": [
            {
              "lessThan": "3.6.1",
              "status": "affected",
              "version": "3.6.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.5.5",
              "status": "affected",
              "version": "3.5.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.4.4",
              "status": "affected",
              "version": "3.4.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.3.6",
              "status": "affected",
              "version": "3.3.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.0.19",
              "status": "affected",
              "version": "3.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.1.1ze",
              "status": "affected",
              "version": "1.1.1",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Stanislav Fort (Aisle Research)"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Stanislav Fort (Aisle Research)"
        }
      ],
      "datePublic": "2026-01-27T14:00:00.000Z",
      "descriptions": [
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          "supportingMedia": [
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              "value": "Issue summary: When using the low-level OCB API directly with AES-NI or\u003cbr\u003eother hardware-accelerated code paths, inputs whose length is not a multiple\u003cbr\u003eof 16 bytes can leave the final partial block unencrypted and unauthenticated.\u003cbr\u003e\u003cbr\u003eImpact summary: The trailing 1-15 bytes of a message may be exposed in\u003cbr\u003ecleartext on encryption and are not covered by the authentication tag,\u003cbr\u003eallowing an attacker to read or tamper with those bytes without detection.\u003cbr\u003e\u003cbr\u003eThe low-level OCB encrypt and decrypt routines in the hardware-accelerated\u003cbr\u003estream path process full 16-byte blocks but do not advance the input/output\u003cbr\u003epointers. The subsequent tail-handling code then operates on the original\u003cbr\u003ebase pointers, effectively reprocessing the beginning of the buffer while\u003cbr\u003eleaving the actual trailing bytes unprocessed. The authentication checksum\u003cbr\u003ealso excludes the true tail bytes.\u003cbr\u003e\u003cbr\u003eHowever, typical OpenSSL consumers using EVP are not affected because the\u003cbr\u003ehigher-level EVP and provider OCB implementations split inputs so that full\u003cbr\u003eblocks and trailing partial blocks are processed in separate calls, avoiding\u003cbr\u003ethe problematic code path. Additionally, TLS does not use OCB ciphersuites.\u003cbr\u003eThe vulnerability only affects applications that call the low-level\u003cbr\u003eCRYPTO_ocb128_encrypt() or CRYPTO_ocb128_decrypt() functions directly with\u003cbr\u003enon-block-aligned lengths in a single call on hardware-accelerated builds.\u003cbr\u003eFor these reasons the issue was assessed as Low severity.\u003cbr\u003e\u003cbr\u003eThe FIPS modules in 3.6, 3.5, 3.4, 3.3, 3.2, 3.1 and 3.0 are not affected\u003cbr\u003eby this issue, as OCB mode is not a FIPS-approved algorithm.\u003cbr\u003e\u003cbr\u003eOpenSSL 3.6, 3.5, 3.4, 3.3, 3.0 and 1.1.1 are vulnerable to this issue.\u003cbr\u003e\u003cbr\u003eOpenSSL 1.0.2 is not affected by this issue."
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        }
      ],
      "metrics": [
        {
          "format": "other",
          "other": {
            "content": {
              "text": "Low"
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            "type": "https://openssl-library.org/policies/general/security-policy/"
          }
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        "shortName": "openssl"
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      "references": [
        {
          "name": "OpenSSL Advisory",
          "tags": [
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          "url": "https://openssl-library.org/news/secadv/20260127.txt"
        },
        {
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    "dateReserved": "2026-01-06T12:44:09.945Z",
    "dateUpdated": "2026-05-12T12:08:40.794Z",
    "state": "PUBLISHED"
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}

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.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.