GHSA-XMVG-W4F9-99R7

Vulnerability from github – Published: 2018-12-20 22:02 – Updated: 2022-09-14 22:23
VLAI
Summary
XML External Entity (XXE) vulnerability in bw-calendar-engine
Details

bw-calendar-engine version <= bw-calendar-engine-3.12.0 contains a XML External Entity (XXE) vulnerability in IscheduleClient XML Parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This attack appear to be exploitable via Man in the Middle or malicious server.

Severity
9.0 (Critical)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.bedework.caleng:bw-calendar-engine"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "3.12.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2018-1000836"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T22:03:50Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "bw-calendar-engine version \u003c= bw-calendar-engine-3.12.0 contains a XML External Entity (XXE) vulnerability in IscheduleClient XML Parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This attack appear to be exploitable via Man in the Middle or malicious server.",
  "id": "GHSA-xmvg-w4f9-99r7",
  "modified": "2022-09-14T22:23:07Z",
  "published": "2018-12-20T22:02:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-1000836"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Bedework/bw-calendar-engine/issues/3"
    },
    {
      "type": "WEB",
      "url": "https://0dd.zone/2018/10/28/bw-calendar-engine-XXE-MitM"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Bedework/bw-calendar-engine"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-xmvg-w4f9-99r7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "XML External Entity (XXE) vulnerability in bw-calendar-engine"
}


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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

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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.