Asuswrt-Merlin 384.6 UDP wanduck.c parse_req_queries Long String buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Asuswrt-Merlin 384.6. The affected element is the function parse_req_queries of the file wanduck.c of the component UDP Handler. The manipulation as part of Long String results in buffer overflow. This vulnerability is identified as CVE-2018-20336. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in Asuswrt-Merlin 384.6. Affected is the function parse_req_queries of the file wanduck.c of the component UDP Handler. The manipulation as part of a Long String leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in Asuswrt-Merlin 384.6. There is a stack-based buffer overflow issue in parse_req_queries function in wanduck.c via a long string over UDP, which may lead to an information leak.

The weakness was released 09/17/2019. This vulnerability is traded as CVE-2018-20336 since 12/21/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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

12/21/2018 🔍
09/17/2019 +270 days 🔍
09/18/2019 +1 days 🔍
12/26/2023 +1560 days 🔍

Sourcesinfo

Advisory: starlabs.sg
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-20336 (🔍)
GCVE (CVE): GCVE-0-2018-20336
GCVE (VulDB): GCVE-100-141906

Entryinfo

Created: 09/18/2019 08:38
Updated: 12/26/2023 08:05
Changes: 09/18/2019 08:38 (54), 08/28/2020 15:11 (1), 12/26/2023 08:05 (3)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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