TOTOLINK N200RE V5 9.3.5u.6437_B20230519 Validity_check format string

CVSS Meta Temp Score
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CTI Interest Score
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8.5$0-$5k0.00

Summaryinfo

A vulnerability was found in TOTOLINK N200RE V5 9.3.5u.6437_B20230519. It has been classified as critical. Affected by this issue is the function Validity_check. Performing a manipulation results in format string. This vulnerability is known as CVE-2023-4746. Remote exploitation of the attack is possible. Furthermore, an exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in TOTOLINK N200RE V5 9.3.5u.6437_B20230519. This affects the function Validity_check. The manipulation with an unknown input leads to a format string vulnerability. CWE is classifying the issue as CWE-134. The product uses a function that accepts a format string as an argument, but the format string originates from an external source. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 09/03/2023. It is possible to read the advisory at gist.github.com. This vulnerability is uniquely identified as CVE-2023-4746. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details and a public exploit are known. The root-cause of the vulnerability is a format string issue. But the impact is to bypass the validation which leads to to OS command injection.

The exploit is shared for download at gist.github.com. It is declared as proof-of-concept.

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

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.5

VulDB Base Score: 8.8
VulDB Temp Score: 8.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 8.8
CNA Vector (VulDB): 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Format string
CWE: CWE-134 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/03/2023 🔍
09/03/2023 +0 days 🔍
09/03/2023 +0 days 🔍
09/29/2023 +26 days 🔍

Sourcesinfo

Vendor: totolink.net

Advisory: gist.github.com
Status: Not defined

CVE: CVE-2023-4746 (🔍)
GCVE (CVE): GCVE-0-2023-4746
GCVE (VulDB): GCVE-100-238635
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/03/2023 08:54
Updated: 09/29/2023 20:39
Changes: 09/03/2023 08:54 (40), 09/04/2023 06:49 (1), 09/29/2023 20:31 (2), 09/29/2023 20:39 (27)
Complete: 🔍
Submitter: dmknght
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #200459: Format string bypasses input validation, leads to RCE in multiple TOTOlink devices (by dmknght)

Duplicate

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

 dmknght (+0)
3 years ago
I would like to add some extra info to the Summary. The root-cause is the format string. But the impact is to bypass the validation, leads to OS command injection.
 VulDB Community Team3 years ago
Thank you for your notification. We have just enhanced the entry accordingly.

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