CVE-2021-25487

Samsung Mobile Devices Out-of-Bounds Read Vulnerability

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

Yes

*KEV

Decision

*SSVC

Descriptions

Lack of boundary checking of a buffer in set_skb_priv() of modem interface driver prior to SMR Oct-2021 Release 1 allows OOB read and it results in arbitrary code execution by dereference of invalid function pointer.

Una falta de comprobación de límites de un búfer en la función set_skb_priv() de modem interface driver versiones anteriores a SMR Oct-2021 Release 1, permite una lectura OOB y permite una ejecución de código arbitrario por desreferencia de un puntero de función no válido

Samsung mobile devices contain an out-of-bounds read vulnerability within the modem interface driver due to a lack of boundary checking of a buffer in set_skb_priv(), leading to remote code execution by dereference of an invalid function pointer.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

Low

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-19 CVE Reserved
2021-10-06 CVE Published
2023-06-29 Exploited in Wild
2023-07-20 KEV Due Date
2023-07-26 EPSS Updated
2024-08-03 CVE Updated
---------- First Exploit

CWE

CWE-125: Out-of-bounds Read

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10	2021-10-13

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Google Search vendor "Google"	Android Search vendor "Google" for product "Android"	8.1 Search vendor "Google" for product "Android" and version "8.1"	-	Affected	in	Samsung Search vendor "Samsung"	Exynos Search vendor "Samsung" for product "Exynos"	-	-	Safe
Google Search vendor "Google"	Android Search vendor "Google" for product "Android"	9.0 Search vendor "Google" for product "Android" and version "9.0"	-	Affected	in	Samsung Search vendor "Samsung"	Exynos Search vendor "Samsung" for product "Exynos"	-	-	Safe
Google Search vendor "Google"	Android Search vendor "Google" for product "Android"	10.0 Search vendor "Google" for product "Android" and version "10.0"	-	Affected	in	Samsung Search vendor "Samsung"	Exynos Search vendor "Samsung" for product "Exynos"	-	-	Safe
Google Search vendor "Google"	Android Search vendor "Google" for product "Android"	11.0 Search vendor "Google" for product "Android" and version "11.0"	-	Affected	in	Samsung Search vendor "Samsung"	Exynos Search vendor "Samsung" for product "Exynos"	-	-	Safe