VDB-229151 · CVE-2023-31856 · EUVD-2023-36146

TOTOLINK CP300+ 5.2cu.7594_B20200910 HTTP Packet NTPSyncWithHostof hostTime command injection

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.3	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in TOTOLINK CP300+ 5.2cu.7594_B20200910. Affected is the function NTPSyncWithHostof of the component HTTP Packet Handler. The manipulation of the argument hostTime leads to command injection. This vulnerability is documented as CVE-2023-31856. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in TOTOLINK CP300+ 5.2cu.7594_B20200910. This issue affects the function NTPSyncWithHostof of the component HTTP Packet Handler. The manipulation of the argument hostTime with an unknown input leads to a command injection vulnerability. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A command injection vulnerability in the hostTime parameter in the function NTPSyncWithHostof TOTOLINK CP300+ V5.2cu.7594_B20200910 allows attackers to execute arbitrary commands via a crafted http packet.

The weakness was released 05/16/2023. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2023-31856 since 04/29/2023. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-36146). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

TOTOLINK

Name

CP300+

Version

5.2cu.7594_B20200910

License

commercial

Website

Vendor: https://www.totolink.net/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 8.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 9.8
CNA Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/29/2023 🔍
05/16/2023 +17 days 🔍
05/16/2023 +0 days 🔍
12/28/2025 +957 days 🔍

Sourcesinfo

Vendor: totolink.net

Advisory: github.com
Status: Not defined

CVE: CVE-2023-31856 (🔍)
GCVE (CVE): GCVE-0-2023-31856
GCVE (VulDB): GCVE-100-229151
EUVD: 🔍

Entryinfo

Created: 05/16/2023 18:15
Updated: 12/28/2025 21:07
Changes: 05/16/2023 18:15 (40), 06/09/2023 14:37 (11), 01/23/2025 17:24 (26), 12/28/2025 21:07 (1)
Complete: 🔍
Cache ID: 216::103