VDB-183981 · CVE-2021-25497 · GCVE-0-2021-25497

Samsung Note prior 4.3.02.61 libSPenBase maetd_cpy_slice buffer overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.6	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Samsung Note. It has been rated as critical. The affected element is the function maetd_cpy_slice of the component libSPenBase. Performing a manipulation results in buffer overflow. This vulnerability is identified as CVE-2021-25497. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in Samsung Note (Smartphone Operating System). This affects the function maetd_cpy_slice of the component libSPenBase. The manipulation with an unknown input 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.

The weakness was released 10/07/2021. The advisory is shared at security.samsungmobile.com. This vulnerability is uniquely identified as CVE-2021-25497 since 01/19/2021. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

Upgrading to version 4.3.02.61 eliminates this vulnerability.

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Productinfo

Type

Smartphone Operating System

Vendor

Samsung

Name

Note

License

commercial

Website

Vendor: https://www.samsung.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.6

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.3
CNA Vector (Samsung Mobile): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Note 4.3.02.61

Timelineinfo

01/19/2021 🔍
10/07/2021 +260 days 🔍
10/07/2021 +0 days 🔍
10/10/2021 +3 days 🔍

Sourcesinfo

Vendor: samsung.com

Advisory: security.samsungmobile.com
Status: Confirmed

CVE: CVE-2021-25497 (🔍)
GCVE (CVE): GCVE-0-2021-25497
GCVE (VulDB): GCVE-100-183981

Entryinfo

Created: 10/07/2021 08:52
Updated: 10/10/2021 08:57
Changes: 10/07/2021 08:52 (50), 10/10/2021 08:57 (1)
Complete: 🔍
Cache ID: 216::103