CVE-2020-10702

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A flaw was found in QEMU in the implementation of the Pointer Authentication (PAuth) support for ARM introduced in version 4.0 and fixed in version 5.0.0. A general failure of the signature generation process caused every PAuth-enforced pointer to be signed with the same signature. A local attacker could obtain the signature of a protected pointer and abuse this flaw to bypass PAuth protection for all programs running on QEMU.

Se encontró un fallo en QEMU en la implementación del soporte Pointer Authentication (PAuth) para ARM introducido en la versión 4.0 y corregido en la versión 5.0.0. Un fallo general del proceso de generación de firmas causó que cada puntero aplicado por PAuth se firmara con la misma firma. Un atacante local podría obtener la firma de un puntero protegido y abusar de este fallo para omitir la protección de PAuth para todos los programas que se ejecutan en QEMU

*Credits: N/A

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

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-03-20 CVE Reserved
2020-05-21 CVE Published
2023-03-08 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-325: Missing Cryptographic Step

CAPEC

References (3)

URL	Tag	Source
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10702	Issue Tracking
https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=de0b1bae6461f67243282555475f88b2384a1eb9	X_refsource_confirm
https://security.netapp.com/advisory/ntap-20200724-0007	Third Party Advisory

URL	Date	SRC

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
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				>= 4.0.0 < 5.0.0 Search vendor "Qemu" for product "Qemu" and version " >= 4.0.0 < 5.0.0"		-		Affected