TP-Link WR840N ARP buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in TP-Link WR840N. This impacts an unknown function of the component ARP Handler. Such manipulation leads to buffer overflow. This vulnerability is referenced as CVE-2021-29280. The attack needs to be initiated within the local network. Furthermore, an exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in TP-Link WR840N (affected version not known). Affected by this issue is some unknown functionality of the component ARP Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability.

The weakness was published 08/19/2021. This vulnerability is handled as CVE-2021-29280. Technical details are unknown but a public exploit is available.

The exploit is available at 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.

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Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

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

Physical: No
Local: No
Remote: Partially

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

03/29/2021 🔍
08/19/2021 +143 days 🔍
08/19/2021 +0 days 🔍
08/21/2021 +2 days 🔍

Sourcesinfo

Vendor: tp-link.com

Status: Not defined

CVE: CVE-2021-29280 (🔍)
GCVE (CVE): GCVE-0-2021-29280
GCVE (VulDB): GCVE-100-181190
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/19/2021 21:40
Updated: 08/21/2021 18:34
Changes: 08/19/2021 21:40 (37), 08/21/2021 18:34 (2)
Complete: 🔍
Cache ID: 216::103

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