Vulnerability-Lookup

FKIE_CVE-2026-3337

Vulnerability from fkie_nvd - Published: 2026-03-02 22:16 - Updated: 2026-03-11 17:14

Severity ?

5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Summary

Observable timing discrepancy in AES-CCM decryption in AWS-LC allows an unauthenticated user to potentially determine authentication tag validity via timing analysis. The impacted implementations are through the EVP CIPHER API: EVP_aes_128_ccm, EVP_aes_192_ccm, and EVP_aes_256_ccm. Customers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0.

References

URL	Tags
ff89ba41-3aa1-4d27-914a-91399e9639e5	https://aws.amazon.com/security/security-bulletins/2026-005-AWS/	Vendor Advisory
ff89ba41-3aa1-4d27-914a-91399e9639e5	https://github.com/aws/aws-lc/releases/tag/v1.69.0	Release Notes
ff89ba41-3aa1-4d27-914a-91399e9639e5	https://github.com/aws/aws-lc/security/advisories/GHSA-frmv-5gcm-jwxh	Vendor Advisory

Impacted products

Vendor	Product	Version
amazon	aws-lc-fips-sys	*
amazon	aws-lc-sys	*
amazon	aws_libcrypto	*
amazon	aws_libcrypto	*

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:amazon:aws-lc-fips-sys:*:*:*:*:*:rust:*:*",
              "matchCriteriaId": "71BBCE97-9AF7-49FD-87CB-7E8A79C23157",
              "versionEndExcluding": "0.13.12",
              "versionStartIncluding": "0.13.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:amazon:aws-lc-sys:*:*:*:*:*:rust:*:*",
              "matchCriteriaId": "43114A7E-C07A-43A3-B8C8-A34D3E970371",
              "versionEndExcluding": "0.38.0",
              "versionStartIncluding": "0.14.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:amazon:aws_libcrypto:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1ECDEEC4-7875-4EBE-B197-00D4F831897E",
              "versionEndExcluding": "1.69.0",
              "versionStartIncluding": "1.21.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:amazon:aws_libcrypto:*:*:*:*:fips:*:*:*",
              "matchCriteriaId": "0AA70D44-F3B1-41E0-9916-40B9D8C7AD9A",
              "versionEndExcluding": "3.2.0",
              "versionStartIncluding": "3.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Observable timing discrepancy in AES-CCM decryption in AWS-LC allows an unauthenticated user to potentially determine authentication tag validity via timing analysis.\n\n\n\n\nThe impacted implementations are through the EVP CIPHER API: EVP_aes_128_ccm, EVP_aes_192_ccm, and EVP_aes_256_ccm.\n\n\n\n\nCustomers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0."
    },
    {
      "lang": "es",
      "value": "Una discrepancia de temporizaci\u00f3n observable en el descifrado AES-CCM en AWS-LC permite a un usuario no autenticado determinar potencialmente la validez de la etiqueta de autenticaci\u00f3n mediante an\u00e1lisis de temporizaci\u00f3n.\n\nLas implementaciones afectadas son a trav\u00e9s de la API EVP CIPHER: EVP_aes_128_ccm, EVP_aes_192_ccm y EVP_aes_256_ccm.\n\nLos clientes de los servicios de AWS no necesitan tomar ninguna medida. Las aplicaciones que utilizan AWS-LC deber\u00edan actualizar a la versi\u00f3n 1.69.0 de AWS-LC."
    }
  ],
  "id": "CVE-2026-3337",
  "lastModified": "2026-03-11T17:14:55.783",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6,
        "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
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          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "HIGH",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-02T22:16:32.093",
  "references": [
    {
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://aws.amazon.com/security/security-bulletins/2026-005-AWS/"
    },
    {
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/aws/aws-lc/releases/tag/v1.69.0"
    },
    {
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/aws/aws-lc/security/advisories/GHSA-frmv-5gcm-jwxh"
    }
  ],
  "sourceIdentifier": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-208"
        }
      ],
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "type": "Secondary"
    }
  ]
}

CVE-2026-3337 (GCVE-0-2026-3337)

Vulnerability from cvelistv5 – Published: 2026-03-02 21:20 – Updated: 2026-03-03 20:04

Title

Timing Side-Channel in AES-CCM Tag Verification in AWS-LC

Summary

Severity ?

5.9 (Medium)


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

8.2 (High)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

CWE

CWE-208 - (Observable Timing Discrepancy)

Assigner

AMZN

References

URL

Tags

	https://aws.amazon.com/security/security-bulletin…	vendor-advisory
	https://github.com/aws/aws-lc/releases/tag/v1.69.0	patch
	https://github.com/aws/aws-lc/security/advisories…	third-party-advisory

Impacted products

Vendor

Product

Version

AWS

AWS-LC

Affected: 1.21.0 , < 1.69.0 (custom)

AWS

AWS-LC-FIPS

Affected: 3.0.0 , < 3.2.0 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-3337",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-03T20:03:12.007267Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-03T20:04:27.577Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "AWS-LC",
          "vendor": "AWS",
          "versions": [
            {
              "lessThan": "1.69.0",
              "status": "affected",
              "version": "1.21.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "AWS-LC-FIPS",
          "vendor": "AWS",
          "versions": [
            {
              "lessThan": "3.2.0",
              "status": "affected",
              "version": "3.0.0",
              "versionType": "custom"
            }
          ]
        }
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          "descriptions": [
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              "lang": "en",
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    "datePublished": "2026-03-02T21:20:08.532Z",
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Sightings

Author	Source	Type	Date

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.

Action not permitted

FKIE_CVE-2026-3337

CVE-2026-3337 (GCVE-0-2026-3337)

Tags

Sightings

Nomenclature