CVE-2021-28169 (GCVE-0-2021-28169)

Vulnerability from cvelistv5 – Published: 2021-06-09 01:55 – Updated: 2024-08-03 21:40
VLAI
Summary
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
CWE
Assigner
eclipse CNA under the mitre root
CNA scorecard C 64/100 over 189 records in the last 180 days details
References
URL Tags
https://github.com/eclipse/jetty.project/security… x_refsource_CONFIRM
https://lists.apache.org/thread.html/r2721aba31a8… mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2021… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/ref1c161a162… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r29678972c3f… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r04a4b4553a2… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rd5b52362f5e… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r284de9c5399… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r234f6452297… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r91e34ff61af… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rb1292d30462… mailing-listx_refsource_MLIST
https://www.debian.org/security/2021/dsa-4949 vendor-advisoryx_refsource_DEBIAN
https://lists.apache.org/thread.html/rfff6ff8ffb3… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r32b0b640ad2… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rf36f1114e84… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rddbb4f8d5db… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r33eb06b05af… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r67c4f90658f… mailing-listx_refsource_MLIST
https://www.oracle.com/security-alerts/cpuoct2021.html x_refsource_MISC
https://lists.apache.org/thread.html/r8a1a332899a… x_refsource_MISC
https://lists.apache.org/thread.html/rbefa055282d… x_refsource_MISC
https://security.netapp.com/advisory/ntap-2021072… x_refsource_CONFIRM
https://www.oracle.com/security-alerts/cpujan2022.html x_refsource_MISC
https://www.oracle.com/security-alerts/cpuapr2022.html x_refsource_MISC
Impacted products
Vendor Product Version CPE status
The Eclipse Foundation Eclipse Jetty Affected: unspecified , ≤ 9.4.40 (custom)
Affected: unspecified , ≤ 10.0.2 (custom)
Affected: unspecified , ≤ 11.0.2 (custom)
guessed Create a notification for this product.
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            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
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            "value": "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."
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            "lang": "es",
            "value": "Para Eclipse Jetty versiones anteriores a 9.4.40 incluy\u00e9ndola, versiones anteriores a 10.0.2 incluy\u00e9ndola, versiones anteriores a 11.0.2 incluy\u00e9ndola, es posible que las petici\u00f3nes al ConcatServlet con una ruta doblemente codificada acceder a recursos protegidos dentro del directorio WEB-INF.\u0026#xa0;Por ejemplo, una petici\u00f3n a \"/concat?/%2557EB-INF/web.xml\" puede recuperar el archivo web.xml.\u0026#xa0;Esto puede revelar informaci\u00f3n confidencial sobre la implementaci\u00f3n de una aplicaci\u00f3n web"
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        ],
        "sourceIdentifier": "emo@eclipse.org",
        "vulnStatus": "Modified",
        "weaknesses": [
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                "lang": "en",
                "value": "CWE-200"
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    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-12T14:08:35+00:00",
      "cve": "CVE-2021-28169",
      "id": "CVE-2021-28169",
      "initial_release_date": "2021-06-08T00:00:00+00:00",
      "product_status:fixed": "7",
      "product_status:known_affected": "48",
      "product_status:known_not_affected": "345",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "jetty: requests to the ConcatServlet and WelcomeFilter are able to access protected resources within the WEB-INF directory",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-28169.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-01T01:39:34Z",
      "cve": "CVE-2021-28169",
      "id": "CVE-2021-28169",
      "initial_release_date": "2023-02-15T03:44:12Z",
      "product_status:recommended": "416",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-28169",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-28169.json",
      "version": "19"
    }
  }
}



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