github - ghsa-724p-rm8h-wjx7

GHSA-724P-RM8H-WJX7

Vulnerability from github – Published: 2021-12-09 00:00 – Updated: 2021-12-14 00:01

Details

An issue was discovered in Plex Media Server through 1.24.4.5081-e362dc1ee. An attacker (with a foothold in a endpoint via a low-privileged user account) can access the exposed RPC service of the update service component. This RPC functionality allows the attacker to interact with the RPC functionality and execute code from a path of his choice (local, or remote via SMB) because of a TOCTOU race condition. This code execution is in the context of the Plex update service (which runs as SYSTEM).

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2021-42835"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-367"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-12-08T15:15:00Z",
    "severity": "HIGH"
  },
  "details": "An issue was discovered in Plex Media Server through 1.24.4.5081-e362dc1ee. An attacker (with a foothold in a endpoint via a low-privileged user account) can access the exposed RPC service of the update service component. This RPC functionality allows the attacker to interact with the RPC functionality and execute code from a path of his choice (local, or remote via SMB) because of a TOCTOU race condition. This code execution is in the context of the Plex update service (which runs as SYSTEM).",
  "id": "GHSA-724p-rm8h-wjx7",
  "modified": "2021-12-14T00:01:32Z",
  "published": "2021-12-09T00:00:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-42835"
    },
    {
      "type": "WEB",
      "url": "https://bugsec.com/experts_teams"
    },
    {
      "type": "WEB",
      "url": "https://forums.plex.tv/t/security-regarding-cve-2021-42835/761510"
    },
    {
      "type": "WEB",
      "url": "https://ir-on.io/2021/12/02/local-privilege-plexcalation"
    },
    {
      "type": "WEB",
      "url": "https://www.plex.tv/media-server-downloads"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2021-42835 (GCVE-0-2021-42835)

Vulnerability from cvelistv5 – Published: 2021-12-08 14:34 – Updated: 2024-08-04 03:38

Summary

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://www.plex.tv/media-server-downloads/	x_refsource_MISC
	https://bugsec.com/experts_teams/	x_refsource_MISC
	https://ir-on.io/2021/12/02/local-privilege-plexc…	x_refsource_MISC
	https://forums.plex.tv/t/security-regarding-cve-2…	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T03:38:50.210Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.plex.tv/media-server-downloads/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugsec.com/experts_teams/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://ir-on.io/2021/12/02/local-privilege-plexcalation/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://forums.plex.tv/t/security-regarding-cve-2021-42835/761510"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in Plex Media Server through 1.24.4.5081-e362dc1ee. An attacker (with a foothold in a endpoint via a low-privileged user account) can access the exposed RPC service of the update service component. This RPC functionality allows the attacker to interact with the RPC functionality and execute code from a path of his choice (local, or remote via SMB) because of a TOCTOU race condition. This code execution is in the context of the Plex update service (which runs as SYSTEM)."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-12-08T14:34:35",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.plex.tv/media-server-downloads/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bugsec.com/experts_teams/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://ir-on.io/2021/12/02/local-privilege-plexcalation/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://forums.plex.tv/t/security-regarding-cve-2021-42835/761510"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-42835",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "An issue was discovered in Plex Media Server through 1.24.4.5081-e362dc1ee. An attacker (with a foothold in a endpoint via a low-privileged user account) can access the exposed RPC service of the update service component. This RPC functionality allows the attacker to interact with the RPC functionality and execute code from a path of his choice (local, or remote via SMB) because of a TOCTOU race condition. This code execution is in the context of the Plex update service (which runs as SYSTEM)."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.plex.tv/media-server-downloads/",
              "refsource": "MISC",
              "url": "https://www.plex.tv/media-server-downloads/"
            },
            {
              "name": "https://bugsec.com/experts_teams/",
              "refsource": "MISC",
              "url": "https://bugsec.com/experts_teams/"
            },
            {
              "name": "https://ir-on.io/2021/12/02/local-privilege-plexcalation/",
              "refsource": "MISC",
              "url": "https://ir-on.io/2021/12/02/local-privilege-plexcalation/"
            },
            {
              "name": "https://forums.plex.tv/t/security-regarding-cve-2021-42835/761510",
              "refsource": "MISC",
              "url": "https://forums.plex.tv/t/security-regarding-cve-2021-42835/761510"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-42835",
    "datePublished": "2021-12-08T14:34:35",
    "dateReserved": "2021-10-22T00:00:00",
    "dateUpdated": "2024-08-04T03:38:50.210Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-724P-RM8H-WJX7

CVE-2021-42835 (GCVE-0-2021-42835)

Tags

Sightings

Nomenclature