CVE-2019-20795

Severity Score

4.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

iproute2 before 5.1.0 has a use-after-free in get_netnsid_from_name in ip/ipnetns.c. NOTE: security relevance may be limited to certain uses of setuid that, although not a default, are sometimes a configuration option offered to end users. Even when setuid is used, other factors (such as C library configuration) may block exploitability.

iproute2 versiones anteriores a 5.1.0, presenta un uso de la memoria previamente liberada en la función get_netnsid_from_name en el archivo ip/ipnetns.c. NOTA: la relevancia para la seguridad puede limitarse a ciertos usos del setuid que, aunque no es un valor predeterminado, a veces es una opción de configuración ofrecida a los usuarios finales. Incluso cuando se utiliza setuid, otros factores (como la configuración de la biblioteca C) pueden bloquear la posibilidad de explotación.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-05-09 CVE Reserved
2020-05-09 CVE Published
2023-03-08 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-416: Use After Free

CAPEC

References (4)

URL	Tag	Source
https://bugzilla.suse.com/show_bug.cgi?id=1171452	Issue Tracking

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/pub/scm/network/iproute2/iproute2.git/commit/?id=9bf2c538a0eb10d66e2365a655bf6c52f5ba3d10	2020-09-10

URL	Date	SRC
https://security.gentoo.org/glsa/202008-06	2020-09-10
https://usn.ubuntu.com/4357-1	2020-09-10

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Iproute2 Project Search vendor "Iproute2 Project"		Iproute2 Search vendor "Iproute2 Project" for product "Iproute2"				< 5.1.0 Search vendor "Iproute2 Project" for product "Iproute2" and version " < 5.1.0"		-		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