ubuntu-cve-2023-36478
Vulnerability from osv_ubuntu
Published
2023-10-10 17:15
Modified
2025-10-24 05:02
Summary
Details

Eclipse Jetty provides a web server and servlet container. In versions 11.0.0 through 11.0.15, 10.0.0 through 10.0.15, and 9.0.0 through 9.4.52, an integer overflow in MetaDataBuilder.checkSize allows for HTTP/2 HPACK header values to exceed their size limit. MetaDataBuilder.java determines if a header name or value exceeds the size limit, and throws an exception if the limit is exceeded. However, when length is very large and huffman is true, the multiplication by 4 in line 295 will overflow, and length will become negative. (_size+length) will now be negative, and the check on line 296 will not be triggered. Furthermore, MetaDataBuilder.checkSize allows for user-entered HPACK header value sizes to be negative, potentially leading to a very large buffer allocation later on when the user-entered size is multiplied by 2. This means that if a user provides a negative length value (or, more precisely, a length value which, when multiplied by the 4/3 fudge factor, is negative), and this length value is a very large positive number when multiplied by 2, then the user can cause a very large buffer to be allocated on the server. Users of HTTP/2 can be impacted by a remote denial of service attack. The issue has been fixed in versions 11.0.16, 10.0.16, and 9.4.53. There are no known workarounds.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "jetty",
            "binary_version": "6.1.26-1ubuntu1.2"
          },
          {
            "binary_name": "libjetty-extra",
            "binary_version": "6.1.26-1ubuntu1.2"
          },
          {
            "binary_name": "libjetty-extra-java",
            "binary_version": "6.1.26-1ubuntu1.2"
          },
          {
            "binary_name": "libjetty-java",
            "binary_version": "6.1.26-1ubuntu1.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "jetty",
        "purl": "pkg:deb/ubuntu/jetty@6.1.26-1ubuntu1.2?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.1.26-1ubuntu1",
        "6.1.26-1ubuntu1.1",
        "6.1.26-1ubuntu1.2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libjetty-extra",
            "binary_version": "6.1.26-5ubuntu0.1"
          },
          {
            "binary_name": "libjetty-extra-java",
            "binary_version": "6.1.26-5ubuntu0.1"
          },
          {
            "binary_name": "libjetty-java",
            "binary_version": "6.1.26-5ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "jetty",
        "purl": "pkg:deb/ubuntu/jetty@6.1.26-5ubuntu0.1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.1.26-5",
        "6.1.26-5ubuntu0.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Eclipse Jetty provides a web server and servlet container. In versions 11.0.0 through 11.0.15, 10.0.0 through 10.0.15, and 9.0.0 through 9.4.52, an integer overflow in `MetaDataBuilder.checkSize` allows for HTTP/2 HPACK header values to exceed their size limit. `MetaDataBuilder.java` determines if a header name or value exceeds the size limit, and throws an exception if the limit is exceeded. However, when length is very large and huffman is true, the multiplication by 4 in line 295 will overflow, and length will become negative. `(_size+length)` will now be negative, and the check on line 296 will not be triggered. Furthermore, `MetaDataBuilder.checkSize` allows for user-entered HPACK header value sizes to be negative, potentially leading to a very large buffer allocation later on when the user-entered size is multiplied by 2. This means that if a user provides a negative length value (or, more precisely, a length value which, when multiplied by the 4/3 fudge factor, is negative), and this length value is a very large positive number when multiplied by 2, then the user can cause a very large buffer to be allocated on the server. Users of HTTP/2 can be impacted by a remote denial of service attack. The issue has been fixed in versions 11.0.16, 10.0.16, and 9.4.53. There are no known workarounds.",
  "id": "UBUNTU-CVE-2023-36478",
  "modified": "2025-10-24T05:02:07Z",
  "published": "2023-10-10T17:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-36478"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/eclipse/jetty.project/pull/9634"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/eclipse/jetty.project/releases/tag/jetty-11.0.16"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/eclipse/jetty.project/security/advisories/GHSA-wgh7-54f2-x98r"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/eclipse/jetty.project/releases/tag/jetty-9.4.53.v20231009"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/eclipse/jetty.project/releases/tag/jetty-10.0.16"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-36478"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2023-36478"
  ]
}



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