GHSA-rm8v-mxj3-5rmq: Github.com/lestrrat go/jwx/v2 Github.com/lestrrat-go/jwx Vulnerable To Potential Padding Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-rm8v-mxj3-5rmq",
  "modified" : "2023-06-14T17:24:36Z",
  "published" : "2023-06-14T17:24:36Z",
  "aliases" : [ ],
  "summary" : "github.com/lestrrat-go/jwx vulnerable to Potential Padding Oracle Attack",
  "details" : "### Summary\n\nDecrypting AES-CBC encrypted JWE has Potential Padding Oracle Attack Vulnerability.\n\n### Details\n\nOn [v2.0.10](https://github.com/lestrrat-go/jwx/releases/tag/v2.0.10), decrypting AES-CBC encrypted JWE may return an error \"failed to generate plaintext from decrypted blocks: invalid padding\":\n\nhttps://github.com/lestrrat-go/jwx/blob/8840ffd4afc5839f591ff0e9ba9034af52b1643e/jwe/internal/aescbc/aescbc.go#L210-L213\n\nReporting padding error causes [Padding Oracle Attack](https://en.wikipedia.org/wiki/Padding_oracle_attack) Vulnerability.\nRFC 7516 JSON Web Encryption (JWE) says that we **MUST NOT** do this.\n\n> 11.5.  Timing Attacks\n> To mitigate the attacks described in RFC 3218 [RFC3218], the\n> recipient MUST NOT distinguish between format, padding, and length\n> errors of encrypted keys.  It is strongly recommended, in the event\n> of receiving an improperly formatted key, that the recipient\n> substitute a randomly generated CEK and proceed to the next step, to\n> mitigate timing attacks.\n\nIn addition, the time to remove padding depends on the length of the padding.\nIt may leak the length of the padding by Timing Attacks.\n\nhttps://github.com/lestrrat-go/jwx/blob/796b2a9101cf7e7cb66455e4d97f3c158ee10904/jwe/internal/aescbc/aescbc.go#L33-L66\n\nTo mitigate Timing Attacks, it MUST be done in constant time.\n\n### Impact\n\nThe authentication tag is verified, so it is not an immediate attack.\n",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/lestrrat-go/jwx/v2"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.0.11"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.0.10"
    }
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/lestrrat-go/jwx"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.2.26"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.2.25"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/lestrrat-go/jwx/security/advisories/GHSA-rm8v-mxj3-5rmq"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/lestrrat-go/jwx/commit/6c41e3822485fc7e11dd70b4b0524b075d66b103"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/lestrrat-go/jwx/commit/d9ddbc8e5009cfdd8c28413390b67afa7f576dd6"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/lestrrat-go/jwx"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/lestrrat-go/jwx/blob/796b2a9101cf7e7cb66455e4d97f3c158ee10904/jwe/internal/aescbc/aescbc.go#L33-L66"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/lestrrat-go/jwx/blob/8840ffd4afc5839f591ff0e9ba9034af52b1643e/jwe/internal/aescbc/aescbc.go#L210-L213"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-06-14T17:24:36Z",
    "nvd_published_at" : null
  }
}