CyberSecBulletin
CVE-2024-43778NVD status: Deferred

HDVR-400: Improper Neutralization of Special Elements used in an OS Command

Published Updated By the CyberSecBulletin desk

CVE-2024-43778 is a high-severity improper neutralization of special elements used in an OS command vulnerability in HDVR-400 from Takenaka Engineering, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. Affected HDVR-400 versions: prior to 46110.1.100869.65. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 1% chance of exploitation within 30 days, higher than 63% of scored CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update hdvr-400_firmware to 46110.1.100869.65 or a later version.
  2. Update hdvr-800_firmware to 53210.1.900103.65 or a later version.
  3. Update hdvr-1600_firmware to 53310.1.900111.65 or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
TAKENAKA ENGINEERINGHDVR-400prior to 46110.1.100869.65Not stated
TAKENAKA ENGINEERINGHDVR-800prior to 53210.1.900103.65Not stated
TAKENAKA ENGINEERINGHDVR-1600prior to 53310.1.900111.65Not stated
TAKENAKA ENGINEERINGAHD04T-Aprior to 7xx10.1.900055.65Not stated
TAKENAKA ENGINEERINGAHD08T-Aprior to 7xx10.1.900055.65Not stated
TAKENAKA ENGINEERINGAHD16T-Aprior to 7xx10.1.900055.65Not stated
TAKENAKA ENGINEERINGNVR04T-Aprior to 56x10.1.100540.65Not stated
TAKENAKA ENGINEERINGNVR08T-Aprior to 56x10.1.100540.65Not stated
TAKENAKA ENGINEERINGNVR16T-Aprior to 49310.1.100540.65Not stated
Takenaka Engineeringhdvr-400_firmwarebefore 46110.1.100869.6546110.1.100869.65
Takenaka Engineeringhdvr-800_firmwarebefore 53210.1.900103.6553210.1.900103.65
Takenaka Engineeringhdvr-1600_firmwarebefore 53310.1.900111.6553310.1.900111.65
Takenaka Engineeringahd04t-a_firmwarebefore 7xx10.1.900055.657xx10.1.900055.65
Takenaka Engineeringahd08t-a_firmwarebefore 7xx10.1.900055.657xx10.1.900055.65
Takenaka Engineeringahd16t-a_firmwarebefore 7xx10.1.900055.657xx10.1.900055.65
Takenaka Engineeringnvr04t-a_firmwarebefore 56x10.1.100540.6556x10.1.100540.65
Takenaka Engineeringnvr08t-a_firmwarebefore 56x10.1.100540.6556x10.1.100540.65
Takenaka Engineeringnvr16t-a_firmwarebefore 49310.1.100540.6549310.1.100540.65

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by CISA (ADP).

Official description

OS command injection vulnerability in multiple digital video recorders provided by TAKENAKA ENGINEERING CO., LTD. allows a remote authenticated attacker to execute an arbitrary OS command on the device or alter the device settings.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Improper Neutralization of Special Elements used in an OS Command

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command before it is sent to a downstream component.

How developers prevent this class of flaw

  • If at all possible, use library calls rather than external processes to recreate the desired functionality.
  • For any data that will be used to generate a command to be executed, keep as much of that data out of external control as possible. For example, in web applications, this may require storing the data locally in the session's state instead of sending it out to the client in a hidden form field.
  • For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.

More Improper Neutralization of Special Elements used in an OS Command vulnerabilities (CWE-78)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in HDVR-400

All HDVR-400 vulnerabilities

Recent Improper Neutralization of Special Elements used in an OS Command vulnerabilities

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