{
  "affected": [
    {
      "database_specific": {
        "unresolved_ranges": [
          {
            "events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2021-03-13"
              }
            ]
          }
        ]
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "a67083ff4b8dcbb7ee2839da6338032030d712b0"
            }
          ],
          "repo": "https://github.com/facebook/mvfst",
          "type": "GIT"
        },
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2021.03.15.00"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5eecfbdf288eaa1f69de04211587b0becd6b8b30"
            }
          ],
          "repo": "https://github.com/facebook/proxygen",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "A packet of death scenario is possible in mvfst via a specially crafted message during a QUIC session, which causes a crash via a failed assertion. Per QUIC specification, this particular message should be treated as a connection error. This issue affects mvfst versions prior to commit a67083ff4b8dcbb7ee2839da6338032030d712b0 and proxygen versions prior to v2021.03.15.00.",
  "id": "CVE-2021-24029",
  "modified": "2026-03-13T21:49:32.543717656Z",
  "published": "2021-03-15T22:15:13.530Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.facebook.com/security/advisories/cve-2021-24029"
    },
    {
      "type": "FIX",
      "url": "https://github.com/facebookincubator/mvfst/commit/a67083ff4b8dcbb7ee2839da6338032030d712b0"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}