Vulnerability from bitnami_vulndb
Published
2024-03-06 11:11
Modified
2025-11-06 13:25
Summary
Apache Tomcat: Request header mix-up between HTTP/2 streams
Details

While investigating bug 64830 it was discovered that Apache Tomcat 10.0.0-M1 to 10.0.0-M9, 9.0.0-M1 to 9.0.39 and 8.5.0 to 8.5.59 could re-use an HTTP request header value from the previous stream received on an HTTP/2 connection for the request associated with the subsequent stream. While this would most likely lead to an error and the closure of the HTTP/2 connection, it is possible that information could leak between requests.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "tomcat",
        "purl": "pkg:bitnami/tomcat"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "8.5.1"
            },
            {
              "fixed": "8.5.60"
            },
            {
              "introduced": "9.0.1"
            },
            {
              "fixed": "9.0.40"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-17527"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:10.0.0:milestone1:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:10.0.0:milestone2:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:10.0.0:milestone3:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:10.0.0:milestone4:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:10.0.0:milestone5:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:10.0.0:milestone6:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:10.0.0:milestone7:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:10.0.0:milestone8:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:10.0.0:milestone9:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone10:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone11:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone12:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone13:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone14:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone15:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone16:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone17:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone18:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone19:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone20:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone21:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone22:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone23:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone24:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone25:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone26:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone27:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone5:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone6:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone7:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone8:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.0:milestone9:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.35-3.39.1:*:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.35-3.57.3:*:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.36:*:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.37:*:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.38:*:*:*:*:*:*:*",
      "cpe:2.3:a:apache:tomcat:9.0.39:*:*:*:*:*:*:*"
    ],
    "severity": "High"
  },
  "details": "While investigating bug 64830 it was discovered that Apache Tomcat 10.0.0-M1 to 10.0.0-M9, 9.0.0-M1 to 9.0.39 and 8.5.0 to 8.5.59 could re-use an HTTP request header value from the previous stream received on an HTTP/2 connection for the request associated with the subsequent stream. While this would most likely lead to an error and the closure of the HTTP/2 connection, it is possible that information could leak between requests.",
  "id": "BIT-tomcat-2020-17527",
  "modified": "2025-11-06T13:25:46.476Z",
  "published": "2024-03-06T11:11:37.082Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2020/12/03/3"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r26a2a66339087fc37db3caf201e446d3e83b5cce314371e235ff1784%40%3Ccommits.tomee.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r2d6e05c5ff96f8068a59dfdb3800e9ee8d4e36ce1971783c6e5f9b20%40%3Ccommits.tomee.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r5a285242737ddef4d338236328aaaf3237183e1465a5efafd16b99ed%40%3Cdev.tomcat.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r8a227ac6a755a6406c1cc47dd48800e973d4cf13fe7fe68ac59c679c%40%3Cdev.tomcat.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r9fd47f1b03e9b41d16a5cf72659b533887267d3398d963c2fff3abfa%40%3Ccommits.tomee.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/ra35c8d617b17d59f400112cebadec43ad379f98198b4a9726190d7ee%40%3Cissues.guacamole.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/ra9fcdb904dd2e2256ef90b3e4ced279cd464cb0ab63a6c64df5c010d%40%3Cannounce.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/ra9fcdb904dd2e2256ef90b3e4ced279cd464cb0ab63a6c64df5c010d%40%3Cannounce.tomcat.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/raa0e9ad388c1e6fd1e301b5e080f9439f64cb4178119a86a4801cc53%40%3Cdev.tomcat.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/rabbe6b3ae6a9795641d7a05c00d2378d5bbbe4240b7e20f09b092cce%40%3Cissues.guacamole.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/rbba08c4dcef3603e36276d49adda8eedbe458c5104314b4038f697e1%40%3Cusers.tomcat.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/rca833c6d42b7b9ce1563488c0929f29fcc95947d86e5e740258c8937%40%3Cdev.tomcat.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/rce5ac9a40173651d540babce59f6f3825f12c6d4e886ba00823b11e5%40%3Cannounce.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/rce5ac9a40173651d540babce59f6f3825f12c6d4e886ba00823b11e5%40%3Cannounce.tomcat.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/rd5babd13d7a350b369b2f647b4dd32ce678af42f9aba5389df1ae6ca%40%3Cusers.tomcat.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2020/12/msg00022.html"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202012-23"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20201210-0003/"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2021/dsa-4835"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com//security-alerts/cpujul2021.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuApr2021.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-17527"
    }
  ],
  "schema_version": "1.5.0",
  "summary": "Apache Tomcat: Request header mix-up between HTTP/2 streams"
}


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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.