Realtek RTL8195A prior 2.08 WPA2 Handshake ClientEAPOLKeyRecvd size stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Realtek RTL8195A. This affects the function ClientEAPOLKeyRecvd of the component WPA2 Handshake Handler. This manipulation of the argument size causes stack-based overflow. This vulnerability is handled as CVE-2020-25857. The attack can only be done within the local network. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Realtek RTL8195A. It has been declared as critical. Affected by this vulnerability is the function ClientEAPOLKeyRecvd of the component WPA2 Handshake Handler. The manipulation of the argument size with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 02/04/2021. It is possible to read the advisory at vdoo.com. This vulnerability is known as CVE-2020-25857. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 2.08 eliminates this vulnerability.

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

Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
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: Stack-based overflow
CWE: CWE-121 / 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: RTL8195A 2.08

Timelineinfo

09/23/2020 🔍
02/04/2021 +134 days 🔍
02/04/2021 +0 days 🔍
02/23/2021 +19 days 🔍

Sourcesinfo

Advisory: vdoo.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-25857 (🔍)
GCVE (CVE): GCVE-0-2020-25857
GCVE (VulDB): GCVE-100-169171

Entryinfo

Created: 02/04/2021 10:37
Updated: 02/23/2021 12:54
Changes: 02/04/2021 10:37 (39), 02/23/2021 12:54 (6)
Complete: 🔍
Cache ID: 216::103

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