Realtek RTL8195AM/RTL8711AM/RTL8711AF/RTL8710AF up to 2.0.5 WPA2 Handshake 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 was found in Realtek RTL8195AM, RTL8711AM, RTL8711AF and RTL8710AF up to 2.0.5. It has been declared as critical. The affected element is an unknown function of the component WPA2 Handshake Handler. Executing a manipulation can lead to buffer overflow. This vulnerability is tracked as CVE-2020-9395. The attack is only possible within the local network. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Realtek RTL8195AM, RTL8711AM, RTL8711AF and RTL8710AF up to 2.0.5 and classified as critical. This vulnerability affects some unknown processing of the component WPA2 Handshake Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered on Realtek RTL8195AM, RTL8711AM, RTL8711AF, and RTL8710AF devices before 2.0.6. A stack-based buffer overflow exists in the client code that takes care of WPA2's 4-way-handshake via a malformed EAPOL-Key packet with a long keydata buffer.

The weakness was disclosed 07/06/2020. This vulnerability was named CVE-2020-9395 since 02/25/2020. Access to the local network is required for this attack to succeed. Required for exploitation is a single authentication. The technical details are unknown and an exploit is not available.

Upgrading to version 2.0.6 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.6

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.0
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: Partially

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: RTL8195AM/RTL8711AM/RTL8711AF/RTL8710AF 2.0.6

Timelineinfo

02/25/2020 🔍
07/06/2020 +132 days 🔍
07/07/2020 +1 days 🔍
07/07/2020 +0 days 🔍

Sourcesinfo

Status: Not defined

CVE: CVE-2020-9395 (🔍)
GCVE (CVE): GCVE-0-2020-9395
GCVE (VulDB): GCVE-100-157702

Entryinfo

Created: 07/07/2020 11:00
Updated: 07/07/2020 11:05
Changes: 07/07/2020 11:00 (37), 07/07/2020 11:05 (17)
Complete: 🔍
Cache ID: 216::103

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