ubuntu-cve-2021-28169
Vulnerability from osv_ubuntu
Published
2021-06-09 02:15
Modified
2025-10-24 04:50
Summary
Details

For Eclipse Jetty versions <= 9.4.40, <= 10.0.2, <= 11.0.2, it is possible for requests to the ConcatServlet with a doubly encoded path to access protected resources within the WEB-INF directory. For example a request to /concat?/%2557EB-INF/web.xml can retrieve the web.xml file. This can reveal sensitive information regarding the implementation of a web application.

Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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": "jetty8",
            "binary_version": "8.1.3-9"
          },
          {
            "binary_name": "libjetty8-extra-java",
            "binary_version": "8.1.3-9"
          },
          {
            "binary_name": "libjetty8-java",
            "binary_version": "8.1.3-9"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "jetty8",
        "purl": "pkg:deb/ubuntu/jetty8@8.1.3-9?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.1.3-8",
        "8.1.3-9"
      ]
    },
    {
      "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"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "jetty8",
            "binary_version": "8.1.19-1"
          },
          {
            "binary_name": "libjetty8-extra-java",
            "binary_version": "8.1.19-1"
          },
          {
            "binary_name": "libjetty8-java",
            "binary_version": "8.1.19-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "jetty8",
        "purl": "pkg:deb/ubuntu/jetty8@8.1.19-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.1.17-2",
        "8.1.18-1",
        "8.1.18-2",
        "8.1.18-3",
        "8.1.19-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "jetty9",
            "binary_version": "9.2.14-1"
          },
          {
            "binary_name": "libjetty9-extra-java",
            "binary_version": "9.2.14-1"
          },
          {
            "binary_name": "libjetty9-java",
            "binary_version": "9.2.14-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "jetty9",
        "purl": "pkg:deb/ubuntu/jetty9@9.2.14-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "9.2.14-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "jetty9",
            "binary_version": "9.4.15-1~18.04.1ubuntu1"
          },
          {
            "binary_name": "libjetty9-extra-java",
            "binary_version": "9.4.15-1~18.04.1ubuntu1"
          },
          {
            "binary_name": "libjetty9-java",
            "binary_version": "9.4.15-1~18.04.1ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "jetty9",
        "purl": "pkg:deb/ubuntu/jetty9@9.4.15-1~18.04.1ubuntu1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "9.2.22-2",
        "9.2.22-3",
        "9.2.23-1",
        "9.4.15-1~18.04.1ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "jetty9",
            "binary_version": "9.4.26-1"
          },
          {
            "binary_name": "libjetty9-extra-java",
            "binary_version": "9.4.26-1"
          },
          {
            "binary_name": "libjetty9-java",
            "binary_version": "9.4.26-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "jetty9",
        "purl": "pkg:deb/ubuntu/jetty9@9.4.26-1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "9.4.18-2build2",
        "9.4.26-1"
      ]
    }
  ],
  "aliases": [],
  "details": "For Eclipse Jetty versions \u003c= 9.4.40, \u003c= 10.0.2, \u003c= 11.0.2, it is possible for requests to the ConcatServlet with a doubly encoded path to access protected resources within the WEB-INF directory. For example a request to `/concat?/%2557EB-INF/web.xml` can retrieve the web.xml file. This can reveal sensitive information regarding the implementation of a web application.",
  "id": "UBUNTU-CVE-2021-28169",
  "modified": "2025-10-24T04:50:13Z",
  "published": "2021-06-09T02:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-28169"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/eclipse/jetty.project/security/advisories/GHSA-gwcr-j4wh-j3cq"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-28169"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-28169"
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.