CVE-2017-7979

Severity Score

7.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The cookie feature in the packet action API implementation in net/sched/act_api.c in the Linux kernel 4.11.x through 4.11-rc7 mishandles the tb nlattr array, which allows local users to cause a denial of service (uninitialized memory access and refcount underflow, and system hang or crash) or possibly have unspecified other impact via "tc filter add" commands in certain contexts. NOTE: this does not affect stable kernels, such as 4.10.x, from kernel.org.

La característica cookie en la implementación del paquete de acción API en net/sched/act_api.c en el kernel de Linux 4.11.x hasta la versión 4.11-rc7 no maneja adecuadamente el array tb nlattr, lo que permite a usuarios locales provocar una denegación de servicio (acceso a memoria no inicializado y desbordamiento inferior de conteo de referencias y cuelgue o caída de sistema) o posiblemente tener otro impacto no especificado a través de comandos "tc filter add" en ciertos contextos. NOTA: esto no afecta a kernels estables, como 4.10.x, de kernel.org.

*Credits: N/A

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

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-04-19 CVE Reserved
2017-04-19 CVE Published
2023-03-08 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (8)

URL	Tag	Source
http://www.securityfocus.com/bid/97969	Vdb Entry

URL	Date	SRC

URL	Date	SRC
http://marc.info/?l=linux-netdev&m=149200742616349	2017-04-26
http://marc.info/?l=linux-netdev&m=149200746116365	2017-04-26
http://marc.info/?l=linux-netdev&m=149200746116366	2017-04-26
http://marc.info/?l=linux-netdev&m=149251041420194	2017-04-26
http://marc.info/?l=linux-netdev&m=149251041420195	2017-04-26
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1682368	2017-04-26
https://bugzilla.proxmox.com/show_bug.cgi?id=1351	2017-04-26

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"				4.11 Search vendor "Linux" for product "Linux Kernel" and version "4.11"		rc1		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				4.11 Search vendor "Linux" for product "Linux Kernel" and version "4.11"		rc2		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				4.11 Search vendor "Linux" for product "Linux Kernel" and version "4.11"		rc3		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				4.11 Search vendor "Linux" for product "Linux Kernel" and version "4.11"		rc4		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				4.11 Search vendor "Linux" for product "Linux Kernel" and version "4.11"		rc5		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				4.11 Search vendor "Linux" for product "Linux Kernel" and version "4.11"		rc6		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				4.11 Search vendor "Linux" for product "Linux Kernel" and version "4.11"		rc7		Affected