usn-4522-1
Vulnerability from osv_ubuntu
Published
2020-09-21 18:50
Modified
2026-04-27 14:11
Summary
novnc vulnerability
Details

It was discovered that noVNC did not properly manage certain messages, resulting in the remote VNC server injecting arbitrary HTML into the noVNC web page. An attacker could use this issue to conduct cross-site scripting (XSS) attacks. (CVE-2017-18635)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2017-18635",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "novnc",
            "binary_version": "1:0.4+dfsg+1+20131010+gitf68af8af3d-4+deb8u1build0.16.04.1"
          },
          {
            "binary_name": "python-novnc",
            "binary_version": "1:0.4+dfsg+1+20131010+gitf68af8af3d-4+deb8u1build0.16.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "novnc",
        "purl": "pkg:deb/ubuntu/novnc@1:0.4+dfsg+1+20131010+gitf68af8af3d-4+deb8u1build0.16.04.1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:0.4+dfsg+1+20131010+gitf68af8af3d-4+deb8u1build0.16.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:0.4+dfsg+1+20131010+gitf68af8af3d-4"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that noVNC did not properly manage certain messages, \nresulting in the remote VNC server injecting arbitrary HTML into the\nnoVNC web page. An attacker could use this issue to conduct cross-site \nscripting (XSS) attacks. (CVE-2017-18635)\n",
  "id": "USN-4522-1",
  "modified": "2026-04-27T14:11:25Z",
  "published": "2020-09-21T18:50:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4522-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-18635"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "novnc vulnerability",
  "upstream": [
    "UBUNTU-CVE-2017-18635"
  ]
}



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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.

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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.
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  • 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.