CVE-2020-28588

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An information disclosure vulnerability exists in the /proc/pid/syscall functionality of Linux Kernel 5.1 Stable and 5.4.66. More specifically, this issue has been introduced in v5.1-rc4 (commit 631b7abacd02b88f4b0795c08b54ad4fc3e7c7c0) and is still present in v5.10-rc4, so it’s likely that all versions in between are affected. An attacker can read /proc/pid/syscall to trigger this vulnerability, which leads to the kernel leaking memory contents.

Se presenta una vulnerabilidad de divulgación de información en la funcionalidad /proc/pid/syscall de Linux Kernel versiones 5.1 Stable y 5.4.66. Más específicamente, este problema ha sido introducido en la versión v5.1-rc4 (commit 631b7abacd02b88f4b0795c08b54ad4fc3e7c7c0) y todavía está presente en la versión v5.10-rc4, por lo que es probable que todas las versiones intermedias estén afectadas. Un atacante puede leer /proc/pid/syscall para activar esta vulnerabilidad, que conlleva a la perdida de contenido de la memoria del kernel

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-11-13 CVE Reserved
2021-02-25 CVE Published
2024-08-04 CVE Updated
2024-08-04 First Exploit
2024-09-12 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-681: Incorrect Conversion between Numeric Types

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1211	2024-08-04

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				5.4.66 Search vendor "Linux" for product "Linux Kernel" and version "5.4.66"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				5.9.8 Search vendor "Linux" for product "Linux Kernel" and version "5.9.8"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				5.10 Search vendor "Linux" for product "Linux Kernel" and version "5.10"		rc4		Affected