CVE-2019-8956

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In the Linux Kernel before versions 4.20.8 and 4.19.21 a use-after-free error in the "sctp_sendmsg()" function (net/sctp/socket.c) when handling SCTP_SENDALL flag can be exploited to corrupt memory.

En el kernel de Linux, en versiones anteriores a las 4.20.8 y 4.19.21, un error de uso de memoria previamente liberada en la función "sctp_sendmsg()" (net/sctp/socket.c) al gestionar la marca SCTP_SENDALL puede explotarse para corromper memoria

*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

2019-02-20 CVE Reserved
2019-04-01 CVE Published
2019-05-28 First Exploit
2024-03-25 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-416: Use After Free
CWE-787: Out-of-bounds Write

CAPEC

References (8)

URL	Tag	Source
https://secuniaresearch.flexerasoftware.com/secunia_research/2019-5	Broken Link
https://support.f5.com/csp/article/K12671141	Third Party Advisory

URL	Date	SRC
https://github.com/butterflyhack/CVE-2019-8956	2019-05-28

URL	Date	SRC
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=ba59fb0273076637f0add4311faa990a5eec27c0	2023-02-24

URL	Date	SRC
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.21	2023-02-24
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.8	2023-02-24
https://usn.ubuntu.com/3930-1	2023-02-24
https://usn.ubuntu.com/3930-2	2023-02-24

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"				>= 4.17 < 4.19.21 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.17 < 4.19.21"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.20 < 4.20.8 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.20 < 4.20.8"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.10"		-		Affected