Realtek RTL8195A prior 2.08 WPA2 Handshake DecWPA2KeyData size stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Realtek RTL8195A. Affected by this issue is the function DecWPA2KeyData of the component WPA2 Handshake Handler. The manipulation of the argument size results in stack-based overflow. This vulnerability is known as CVE-2020-25856. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Realtek RTL8195A. It has been classified as critical. Affected is the function DecWPA2KeyData of the component WPA2 Handshake Handler. The manipulation of the argument size with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as 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). This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 02/04/2021. The advisory is available at vdoo.com. This vulnerability is traded as CVE-2020-25856. Technical details are known, but there is no available exploit.

Upgrading to version 2.08 eliminates this vulnerability.

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

Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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: 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: 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-2020-25856 (🔍)
GCVE (CVE): GCVE-0-2020-25856
GCVE (VulDB): GCVE-100-169170

Entryinfo

Created: 02/04/2021 10:32
Updated: 02/23/2021 12:51
Changes: 02/04/2021 10:32 (39), 02/23/2021 12:51 (6)
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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