English
Français
Light
Dark
System

CVEFind - Alertes CVE

Restez informé en continue
Créer un compte Ouvrez un compte Simple et Gratuit Se connecter Gérez vos alertes

CVE-2021-0235 : Détail

CVE-2021-0235

7.3
/
HIGH
A01-Broken Access Control
0.04%V3
Local
2021-04-13 22:00 +00:00
2024-08-03 15:32 +00:00
CVE.org
NVD

Alerte pour un CVE

Restez informé de toutes modifications pour un CVE spécifique.
Gestion des alertes

Descriptions

Junos OS: SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3, vSRX Series: In a multi-tenant environment, a tenant host administrator may configure logical firewall isolation affecting other tenant networks

On SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3, vSRX Series devices using tenant services on Juniper Networks Junos OS, due to incorrect permission scheme assigned to tenant system administrators, a tenant system administrator may inadvertently send their network traffic to one or more tenants while concurrently modifying the overall device system traffic management, affecting all tenants and the service provider. Further, a tenant may inadvertently receive traffic from another tenant. This issue affects: Juniper Networks Junos OS 18.3 version 18.3R1 and later versions on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2; 18.4 version 18.4R1 and later versions on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; 19.1 versions 19.1R1 and later versions on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; 19.3 versions prior to 19.3R3-S2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; 19.4 versions prior to 19.4R2-S4, 19.4R3-S2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; 20.1 versions prior to 20.1R2, 20.1R3 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series; 20.2 versions prior to 20.2R2-S1, 20.2R3 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series; 20.3 versions prior to 20.3R1-S2, 20.3R2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series; 20.4 versions prior to 20.4R1, 20.4R2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series. This issue does not affect Juniper Networks Junos OS versions prior to 18.3R1.

Solutions

The following software releases have been updated to resolve this specific issue: 19.2R1-S6, 19.2R3-S2, 19.3R3-S2, 19.4R2-S4, 19.4R3-S2, 20.1R2, 20.1R3, 20.2R2-S1, 20.2R3, 20.3R1-S2, 20.3R2, 20.4R1, and all subsequent releases.

Informations

Faiblesses connexes

CWE-ID Nom de la faiblesse Source
CWE-276 Incorrect Default Permissions
During installation, installed file permissions are set to allow anyone to modify those files.

Metrics

Metric Score Sévérité CVSS Vecteur Source
V3.1 7.3 HIGH CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:L

Base: Exploitabilty Metrics

The Exploitability metrics reflect the characteristics of the thing that is vulnerable, which we refer to formally as the vulnerable component.

Attack Vector

This metric reflects the context by which vulnerability exploitation is possible.

Local

The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities.

Attack Complexity

This metric describes the conditions beyond the attacker’s control that must exist in order to exploit the vulnerability.

Low

Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success when attacking the vulnerable component.

Privileges Required

This metric describes the level of privileges an attacker must possess before successfully exploiting the vulnerability.

High

The attacker requires privileges that provide significant (e.g., administrative) control over the vulnerable component allowing access to component-wide settings and files.

User Interaction

This metric captures the requirement for a human user, other than the attacker, to participate in the successful compromise of the vulnerable component.

None

The vulnerable system can be exploited without interaction from any user.

Base: Scope Metrics

The Scope metric captures whether a vulnerability in one vulnerable component impacts resources in components beyond its security scope.

Scope

Formally, a security authority is a mechanism (e.g., an application, an operating system, firmware, a sandbox environment) that defines and enforces access control in terms of how certain subjects/actors (e.g., human users, processes) can access certain restricted objects/resources (e.g., files, CPU, memory) in a controlled manner. All the subjects and objects under the jurisdiction of a single security authority are considered to be under one security scope. If a vulnerability in a vulnerable component can affect a component which is in a different security scope than the vulnerable component, a Scope change occurs. Intuitively, whenever the impact of a vulnerability breaches a security/trust boundary and impacts components outside the security scope in which vulnerable component resides, a Scope change occurs.

Changed

An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.

Base: Impact Metrics

The Impact metrics capture the effects of a successfully exploited vulnerability on the component that suffers the worst outcome that is most directly and predictably associated with the attack. Analysts should constrain impacts to a reasonable, final outcome which they are confident an attacker is able to achieve.

Confidentiality Impact

This metric measures the impact to the confidentiality of the information resources managed by a software component due to a successfully exploited vulnerability.

Low

There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.

Integrity Impact

This metric measures the impact to integrity of a successfully exploited vulnerability. Integrity refers to the trustworthiness and veracity of information.

High

There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.

Availability Impact

This metric measures the impact to the availability of the impacted component resulting from a successfully exploited vulnerability.

Low

Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Temporal Metrics

The Temporal metrics measure the current state of exploit techniques or code availability, the existence of any patches or workarounds, or the confidence in the description of a vulnerability.

Environmental Metrics

These metrics enable the analyst to customize the CVSS score depending on the importance of the affected IT asset to a user’s organization, measured in terms of Confidentiality, Integrity, and Availability.
V2 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P [email protected]

EPSS

EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.

EPSS Score

Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.

EPSS Percentile

Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.
EPSS First.org

Products Mentioned

Configuraton 0

Juniper>>Junos >> Version 18.3

Juniper>>Junos >> Version 18.3

Juniper>>Junos >> Version 18.3

Juniper>>Junos >> Version 18.3

Juniper>>Junos >> Version 18.3

Juniper>>Junos >> Version 18.3

Juniper>>Junos >> Version 18.3

Juniper>>Junos >> Version 18.3

Juniper>>Junos >> Version 18.3

Juniper>>Junos >> Version 18.3

Juniper>>Junos >> Version 18.3

Juniper>>Junos >> Version 18.3

Juniper>>Junos >> Version 18.3

Juniper>>Junos >> Version 18.3

Juniper>>Junos >> Version 18.3

Juniper>>Junos >> Version 18.3

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 18.4

Juniper>>Junos >> Version 19.1

Juniper>>Junos >> Version 19.1

Juniper>>Junos >> Version 19.1

Juniper>>Junos >> Version 19.1

Juniper>>Junos >> Version 19.1

Juniper>>Junos >> Version 19.1

Juniper>>Junos >> Version 19.1

Juniper>>Junos >> Version 19.1

Juniper>>Junos >> Version 19.1

Juniper>>Junos >> Version 19.1

Juniper>>Junos >> Version 19.1

Juniper>>Junos >> Version 19.1

Juniper>>Junos >> Version 19.2

Juniper>>Junos >> Version 19.2

Juniper>>Junos >> Version 19.2

Juniper>>Junos >> Version 19.2

Juniper>>Junos >> Version 19.2

Juniper>>Junos >> Version 19.2

Juniper>>Junos >> Version 19.2

Juniper>>Junos >> Version 19.2

Juniper>>Junos >> Version 19.2

Juniper>>Junos >> Version 19.2

Juniper>>Junos >> Version 19.2

Juniper>>Junos >> Version 19.3

Juniper>>Junos >> Version 19.3

Juniper>>Junos >> Version 19.3

Juniper>>Junos >> Version 19.3

Juniper>>Junos >> Version 19.3

Juniper>>Junos >> Version 19.3

Juniper>>Junos >> Version 19.3

Juniper>>Junos >> Version 19.3

Juniper>>Junos >> Version 19.3

Juniper>>Junos >> Version 19.3

Juniper>>Junos >> Version 19.4

Juniper>>Junos >> Version 19.4

Juniper>>Junos >> Version 19.4

Juniper>>Junos >> Version 19.4

Juniper>>Junos >> Version 19.4

Juniper>>Junos >> Version 19.4

Juniper>>Junos >> Version 19.4

Juniper>>Junos >> Version 19.4

Juniper>>Junos >> Version 19.4

Juniper>>Junos >> Version 20.1

Juniper>>Junos >> Version 20.1

Juniper>>Junos >> Version 20.1

Juniper>>Junos >> Version 20.1

Juniper>>Junos >> Version 20.1

Juniper>>Junos >> Version 20.2

Juniper>>Junos >> Version 20.2

Juniper>>Junos >> Version 20.2

Juniper>>Junos >> Version 20.2

Juniper>>Junos >> Version 20.2

Juniper>>Junos >> Version 20.3

Juniper>>Junos >> Version 20.3

Juniper>>Srx1500 >> Version -

Juniper>>Srx4100 >> Version -

Juniper>>Srx4200 >> Version -

Juniper>>Srx4600 >> Version -

Juniper>>Srx5000 >> Version -

References

https://kb.juniper.net/JSA11130
Tags : x_refsource_MISC

Plus d'informations
Cliquez sur le bouton à gauche (OFF), pour autoriser l'inscription de cookie améliorant les fonctionnalités du site. Cliquez sur le bouton à gauche (Tout accepter), pour ne plus autoriser l'inscription de cookie améliorant les fonctionnalités du site.