GHSA-3HW2-H67C-WQ66

Vulnerability from github – Published: 2022-05-24 19:19 – Updated: 2025-09-30 17:57
VLAI?
Summary
Uncontrolled Recursion in Akka HTTP
Details

Akka HTTP 10.1.x and 10.2.x before 10.2.7 can encounter stack exhaustion while parsing HTTP headers, which allows a remote attacker to conduct a Denial of Service attack by sending a User-Agent header with deeply nested comments.

Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c 10.1.15"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "com.typesafe.akka:akka-http-core_2.13.0-RC3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.1.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c 10.1.15"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "com.typesafe.akka:akka-http-core_2.13.0-RC2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.1.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c 10.1.15"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "com.typesafe.akka:akka-http-core_2.13.0-M5"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.1.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c 10.1.15"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "com.typesafe.akka:aakka-http-core_2.13.0-M3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.1.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.typesafe.akka:akka-http-core_2.13"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.1.0"
            },
            {
              "fixed": "10.1.15"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.typesafe.akka:akka-http-core_2.13"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.2.0-M1"
            },
            {
              "fixed": "10.2.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.typesafe.akka:akka-http-core_2.12"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.1.0"
            },
            {
              "fixed": "10.1.15"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.typesafe.akka:akka-http-core_2.12"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.2.0-M1"
            },
            {
              "fixed": "10.2.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.typesafe.akka:akka-http-core_2.11"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.1.0"
            },
            {
              "fixed": "10.1.15"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-42697"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-674",
      "CWE-787"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-06-21T20:08:40Z",
    "nvd_published_at": "2021-11-02T22:15:00Z",
    "severity": "HIGH"
  },
  "details": "Akka HTTP 10.1.x and 10.2.x before 10.2.7 can encounter stack exhaustion while parsing HTTP headers, which allows a remote attacker to conduct a Denial of Service attack by sending a User-Agent header with deeply nested comments.",
  "id": "GHSA-3hw2-h67c-wq66",
  "modified": "2025-09-30T17:57:30Z",
  "published": "2022-05-24T19:19:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-42697"
    },
    {
      "type": "WEB",
      "url": "https://github.com/akka/akka-http/pull/3924"
    },
    {
      "type": "WEB",
      "url": "https://akka.io/blog"
    },
    {
      "type": "WEB",
      "url": "https://akka.io/blog/news/2021/11/02/akka-http-10.2.7-released"
    },
    {
      "type": "WEB",
      "url": "https://akka.io/blog/news/2021/11/22/akka-http-10.1.15-released"
    },
    {
      "type": "WEB",
      "url": "https://doc.akka.io/docs/akka-http/current/security/2021-CVE-2021-42697-stack-overflow-parsing-user-agent.html"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/akka/akka-http"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/167018/Akka-HTTP-10.1.14-Denial-Of-Service.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Uncontrolled Recursion in Akka HTTP"
}


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