GHSA-4V4G-726H-XVFV中危已审查

Padding Oracle Attack due to Observable Timing Discrepancy in jose-node-esm-runtime

OSV 1.4.0 · github-reviewed · 修改于 2023-03-18 01:49

发布时间

2021-04-19 22:59

GitHub 审查时间

2021-04-17 07:00

NVD 发布时间

2021-04-17 06:15

源文件

advisories/github-reviewed/2021/04/GHSA-4v4g-726h-xvfv/GHSA-4v4g-726h-xvfv.json

公告说明

Impact

AES_CBC_HMAC_SHA2 Algorithm (A128CBC-HS256, A192CBC-HS384, A256CBC-HS512) decryption would always execute both HMAC tag verification and CBC decryption, if either failed JWEDecryptionFailed would be thrown. But a possibly observable difference in timing when padding error would occur while decrypting the ciphertext makes a padding oracle and an adversary might be able to make use of that oracle to decrypt data without knowing the decryption key by issuing on average 128*b calls to the padding oracle (where b is the number of bytes in the ciphertext block).

Patches

A patch was released which ensures the HMAC tag is verified before performing CBC decryption. The fixed versions are >=3.11.4.

Users should upgrade to ^3.11.4.

Credits

Thanks to Morgan Brown of Microsoft for bringing this up and Eva Sarafianou (@esarafianou) for helping to score this advisory.

受影响的软件包

npm

jose-node-esm-runtime

标识信息

别名 / CVE

CVE-2021-29445

CWE

CWE-203CWE-208CWE-696

软件生态

npm

扩展资料

暂无扩展资料。

CVSS 评分

CVSS_V3

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

原始 OSV JSON

{
  "id": "GHSA-4v4g-726h-xvfv",
  "aliases": [
    "CVE-2021-29445"
  ],
  "details": "### Impact\n\n[AES_CBC_HMAC_SHA2 Algorithm](https://tools.ietf.org/html/rfc7518#section-5.2) (A128CBC-HS256, A192CBC-HS384, A256CBC-HS512) decryption would always execute both HMAC tag verification and CBC decryption, if either failed `JWEDecryptionFailed` would be thrown. But a possibly observable difference in timing when padding error would occur while decrypting the ciphertext makes a padding oracle and an adversary might be able to make use of that oracle to decrypt data without knowing the decryption key by issuing on average 128*b calls to the padding oracle (where b is the number of bytes in the ciphertext block).\n\n### Patches\n\nA patch was released which ensures the HMAC tag is verified before performing CBC decryption. The fixed versions are `>=3.11.4`.\n\nUsers should upgrade to `^3.11.4`.\n\n### Credits\nThanks to Morgan Brown of Microsoft for bringing this up and Eva Sarafianou (@esarafianou) for helping to score this advisory.",
  "summary": "Padding Oracle Attack due to Observable Timing Discrepancy in jose-node-esm-runtime",
  "affected": [
    {
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.11.4"
            }
          ]
        }
      ],
      "package": {
        "name": "jose-node-esm-runtime",
        "ecosystem": "npm"
      }
    }
  ],
  "modified": "2023-03-17T17:49:46Z",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"
    }
  ],
  "published": "2021-04-19T14:59:06Z",
  "references": [
    {
      "url": "https://github.com/panva/jose/security/advisories/GHSA-4v4g-726h-xvfv",
      "type": "WEB"
    },
    {
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-29445",
      "type": "ADVISORY"
    },
    {
      "url": "https://github.com/panva/jose",
      "type": "PACKAGE"
    },
    {
      "url": "https://www.npmjs.com/package/jose-node-esm-runtime",
      "type": "WEB"
    }
  ],
  "schema_version": "1.4.0",
  "database_specific": {
    "cwe_ids": [
      "CWE-203",
      "CWE-208",
      "CWE-696"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "nvd_published_at": "2021-04-16T22:15:00Z",
    "github_reviewed_at": "2021-04-16T23:00:41Z"
  }
}