CVE-2024-3721 (GCVE-0-2024-3721)

Vulnerability from cvelistv5 – Published: 2024-04-13 12:00 – Updated: 2024-08-01 20:20
VLAI Shadowserver Previdian
Title
TBK DVR-4104/DVR-4216 os command injection
Summary
A vulnerability was found in TBK DVR-4104 and DVR-4216 up to 20240412 and classified as critical. This issue affects some unknown processing of the file /device.rsp?opt=sys&cmd=___S_O_S_T_R_E_A_MAX___. The manipulation of the argument mdb/mdc leads to os command injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-260573 was assigned to this vulnerability.
Severity
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-02 18:02 UTC
CWE
  • CWE-78 - OS Command Injection
Assigner
References
URL Tags
https://vuldb.com/?id.260573 vdb-entrytechnical-description
https://vuldb.com/?ctiid.260573 signaturepermissions-required
https://vuldb.com/?submit.314969 third-party-advisory
https://github.com/netsecfish/tbk_dvr_command_injection exploit
Impacted products
Vendor Product Version CPE status
TBK DVR-4104 Affected: 20240412
guessed Create a notification for this product.
TBK DVR-4216 Affected: 20240412
guessed Create a notification for this product.
tbkvision tbk-dvr4104 Affected: 0
    cpe:2.3:h:tbkvision:tbk-dvr4104:-:*:*:*:*:*:*:*
Create a notification for this product.
tbkvision tbk-dvr4216 Affected: 0
    cpe:2.3:h:tbkvision:tbk-dvr4216:-:*:*:*:*:*:*:*
Create a notification for this product.
Credits
netsecfish (VulDB User)
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 30f51e5d-ded8-447e-b17c-12e279f9e00e

Vulnerability ID: CVE-2024-3721

Status: Confirmed

Status Updated: 2026-09-07 00:00 UTC

Exploited: Yes

Characteristics
Severity: 0.0
Timestamps
First Seen: 2024-04-21
Asserted: 2024-04-21
Last Seen: 2026-09-07
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: TBK / TBK DVR-4104/DVR-4216 | Class: video-system | Severity: None (CVSS 0) | IoT: yes | In CISA KEV: no | Honeypot connections on 2026-09-07: 12
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 6
Iot yes
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class video-system
7D Avg 1
Vendor TBK
30D Avg 1
90D Avg 2
Product TBK DVR-4104/DVR-4216
Cisa Kev no
Connections 12
Observation Date 2026-09-07
Vulnerability Class CVSS
Vulnerability Score 0
Vulnerability Severity None
References
Created: 2026-07-01 05:53 UTC | Updated: 2026-09-09 01:00 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 10b9d3da-00bc-4df3-853f-ab74a07d3eb9

Vulnerability ID: CVE-2024-3721

Status: Confirmed

Status Updated: 2025-04-28 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2025-04-28
Asserted: 2025-04-28
Scope
Notes: KEVIntel entry: TBK DVR-4104/DVR-4216 os command injection | Affected: TBK / DVR-4104, DVR-4216 | CVSS: 6.3 (MEDIUM) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title TBK DVR-4104/DVR-4216 os command injection
Vendor TBK
Product DVR-4104, DVR-4216
Added Date 2025-04-28T00:00:00.000Z
Cvss Score 6.3
Epss Score None
Cvss Severity MEDIUM
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-06-23 11:13 UTC | Updated: 2026-06-23 11:13 UTC
Show details on NVD website
To clipboard 

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            {
              "lang": "en",
              "value": "A vulnerability was found in TBK DVR-4104 and DVR-4216 up to 20240412 and classified as critical. This issue affects some unknown processing of the file /device.rsp?opt=sys\u0026cmd=___S_O_S_T_R_E_A_MAX___. The manipulation of the argument mdb/mdc leads to os command injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-260573 was assigned to this vulnerability."
            },
            {
              "lang": "de",
              "value": "Eine kritische Schwachstelle wurde in TBK DVR-4104 and DVR-4216 bis 20240412 gefunden. Betroffen davon ist ein unbekannter Prozess der Datei /device.rsp?opt=sys\u0026cmd=___S_O_S_T_R_E_A_MAX___. Mittels dem Manipulieren des Arguments mdb/mdc mit unbekannten Daten kann eine os command injection-Schwachstelle ausgenutzt werden. Die Umsetzung des Angriffs kann dabei \u00fcber das Netzwerk erfolgen. Der Exploit steht zur \u00f6ffentlichen Verf\u00fcgung."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 6.3,
                "baseSeverity": "MEDIUM",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
                "version": "3.1"
              }
            },
            {
              "cvssV3_0": {
                "baseScore": 6.3,
                "baseSeverity": "MEDIUM",
                "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
                "version": "3.0"
              }
            },
            {
              "cvssV2_0": {
                "baseScore": 6.5,
                "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
                "version": "2.0"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-78",
                  "description": "CWE-78 OS Command Injection",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2024-04-13T12:00:04.795Z",
            "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
            "shortName": "VulDB"
          },
          "references": [
            {
              "name": "VDB-260573 | TBK DVR-4104/DVR-4216 os command injection",
              "tags": [
                "vdb-entry",
                "technical-description"
              ],
              "url": "https://vuldb.com/?id.260573"
            },
            {
              "name": "VDB-260573 | CTI Indicators (IOB, IOC, TTP, IOA)",
              "tags": [
                "signature",
                "permissions-required"
              ],
              "url": "https://vuldb.com/?ctiid.260573"
            },
            {
              "name": "Submit #314969 | TBK TBK DVR-4104, TBK DVR-4216 N/A Command Injection",
              "tags": [
                "third-party-advisory"
              ],
              "url": "https://vuldb.com/?submit.314969"
            },
            {
              "tags": [
                "exploit"
              ],
              "url": "https://github.com/netsecfish/tbk_dvr_command_injection"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2024-04-12T00:00:00.000Z",
              "value": "Advisory disclosed"
            },
            {
              "lang": "en",
              "time": "2024-04-12T02:00:00.000Z",
              "value": "VulDB entry created"
            },
            {
              "lang": "en",
              "time": "2024-04-12T19:25:37.000Z",
              "value": "VulDB entry last update"
            }
          ],
          "title": "TBK DVR-4104/DVR-4216 os command injection"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "assignerShortName": "VulDB",
        "cveId": "CVE-2024-3721",
        "datePublished": "2024-04-13T12:00:04.795Z",
        "dateReserved": "2024-04-12T17:19:17.559Z",
        "dateUpdated": "2024-08-01T20:20:00.692Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.