CVE-2021-1377 : Détail

CVE-2021-1377

5.8
/
Moyen
0.15%V3
Network
2021-03-24
20h10 +00:00
2024-11-08
23h32 +00:00
CVE.org
NVD
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Descriptions du CVE

Cisco IOS and IOS XE Software ARP Resource Management Exhaustion Denial of Service Vulnerability

A vulnerability in Address Resolution Protocol (ARP) management of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to prevent an affected device from resolving ARP entries for legitimate hosts on the connected subnets. This vulnerability exists because ARP entries are mismanaged. An attacker could exploit this vulnerability by continuously sending traffic that results in incomplete ARP entries. A successful exploit could allow the attacker to cause ARP requests on the device to be unsuccessful for legitimate hosts, resulting in a denial of service (DoS) condition.

Informations du CVE

Faiblesses connexes

CWE-ID Nom de la faiblesse Source
CWE-399 Category : Resource Management Errors
Weaknesses in this category are related to improper management of system resources.
CWE Other No informations.

Métriques

Métriques Score Gravité CVSS Vecteur Source
V3.1 5.8 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/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.

Network

The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).

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.

None

The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.

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.

None

There is no loss of confidentiality within 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.

None

There is no loss of integrity within 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 5 AV:N/AC:L/Au:N/C:N/I:N/A:P [email protected]

EPSS

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

Score EPSS

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.

Percentile EPSS

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

Cisco>>Ios >> Version 12.2\(6\)i1

Cisco>>Ios >> Version 15.1\(3\)svr1

Cisco>>Ios >> Version 15.1\(3\)svr2

Cisco>>Ios >> Version 15.1\(3\)svr3

Cisco>>Ios >> Version 15.1\(3\)svs

Cisco>>Ios >> Version 15.1\(3\)svs1

Cisco>>Ios >> Version 15.2\(2\)e6

Cisco>>Ios >> Version 15.2\(2\)e7

Cisco>>Ios >> Version 15.2\(2\)e7b

Cisco>>Ios >> Version 15.2\(2\)e8

Cisco>>Ios >> Version 15.2\(2\)e9

Cisco>>Ios >> Version 15.2\(2\)e9a

Cisco>>Ios >> Version 15.2\(2\)e10

Cisco>>Ios >> Version 15.2\(3\)e5

Cisco>>Ios >> Version 15.2\(4\)e4

Cisco>>Ios >> Version 15.2\(4\)e5

Cisco>>Ios >> Version 15.2\(4\)e5a

Cisco>>Ios >> Version 15.2\(4\)e6

Cisco>>Ios >> Version 15.2\(4\)e7

Cisco>>Ios >> Version 15.2\(4\)e8

Cisco>>Ios >> Version 15.2\(4\)e9

Cisco>>Ios >> Version 15.2\(4\)e10

Cisco>>Ios >> Version 15.2\(4\)e10a

Cisco>>Ios >> Version 15.2\(4\)ea6

Cisco>>Ios >> Version 15.2\(4\)ea7

Cisco>>Ios >> Version 15.2\(4\)ea8

Cisco>>Ios >> Version 15.2\(4\)ea9

Cisco>>Ios >> Version 15.2\(4\)ea9a

Cisco>>Ios >> Version 15.2\(4\)ea10

Cisco>>Ios >> Version 15.2\(5\)e1

Cisco>>Ios >> Version 15.2\(5\)e2

Cisco>>Ios >> Version 15.2\(5\)e2b

Cisco>>Ios >> Version 15.2\(5\)e2c

Cisco>>Ios >> Version 15.2\(5\)ex

Cisco>>Ios >> Version 15.2\(5a\)e1

Cisco>>Ios >> Version 15.2\(6\)e

Cisco>>Ios >> Version 15.2\(6\)e0a

Cisco>>Ios >> Version 15.2\(6\)e0c

Cisco>>Ios >> Version 15.2\(6\)e1

Cisco>>Ios >> Version 15.2\(6\)e1a

Cisco>>Ios >> Version 15.2\(6\)e1s

Cisco>>Ios >> Version 15.2\(6\)e2

Cisco>>Ios >> Version 15.2\(6\)e2a

Cisco>>Ios >> Version 15.2\(6\)e2b

Cisco>>Ios >> Version 15.2\(6\)e3

Cisco>>Ios >> Version 15.2\(6\)eb

Cisco>>Ios >> Version 15.2\(7\)e

Cisco>>Ios >> Version 15.2\(7\)e0a

Cisco>>Ios >> Version 15.2\(7\)e0b

Cisco>>Ios >> Version 15.2\(7\)e0s

Cisco>>Ios >> Version 15.2\(7\)e1

Cisco>>Ios >> Version 15.2\(7\)e1a

Cisco>>Ios >> Version 15.2\(7\)e2

Cisco>>Ios >> Version 15.2\(7\)e2a

Cisco>>Ios >> Version 15.2\(7\)e2b

Cisco>>Ios >> Version 15.2\(7\)e3

Cisco>>Ios >> Version 15.2\(7a\)e0b

Cisco>>Ios >> Version 15.2\(7b\)e0b

Cisco>>Ios >> Version 15.3\(3\)jpc97

    Cisco>>Ios >> Version 15.4\(1\)sy

    Cisco>>Ios >> Version 15.4\(1\)sy1

    Cisco>>Ios >> Version 15.4\(1\)sy2

    Cisco>>Ios >> Version 15.4\(1\)sy3

    Cisco>>Ios >> Version 15.4\(1\)sy4

    Cisco>>Ios >> Version 15.5\(1\)sy

    Cisco>>Ios >> Version 15.5\(1\)sy1

    Cisco>>Ios >> Version 15.5\(1\)sy2

    Cisco>>Ios >> Version 15.5\(1\)sy3

    Cisco>>Ios >> Version 15.5\(1\)sy4

    Cisco>>Ios >> Version 15.5\(1\)sy5

    Cisco>>Ios >> Version 15.5\(1\)sy6

    Cisco>>Ios >> Version 15.5\(3\)m4

    Cisco>>Ios >> Version 15.5\(3\)m4a

    Cisco>>Ios >> Version 15.5\(3\)m4b

    Cisco>>Ios >> Version 15.5\(3\)m4c

    Cisco>>Ios >> Version 15.5\(3\)m5

    Cisco>>Ios >> Version 15.5\(3\)m6

    Cisco>>Ios >> Version 15.5\(3\)m6a

    Cisco>>Ios >> Version 15.5\(3\)m7

    Cisco>>Ios >> Version 15.5\(3\)m8

    Cisco>>Ios >> Version 15.5\(3\)m9

    Cisco>>Ios >> Version 15.5\(3\)m10

    Cisco>>Ios >> Version 15.5\(3\)m11

    Cisco>>Ios >> Version 15.5\(3\)s4

    Cisco>>Ios >> Version 15.5\(3\)s5

    Cisco>>Ios >> Version 15.5\(3\)s6

    Cisco>>Ios >> Version 15.5\(3\)s6a

    Cisco>>Ios >> Version 15.5\(3\)s6b

    Cisco>>Ios >> Version 15.5\(3\)s7

    Cisco>>Ios >> Version 15.5\(3\)s8

    Cisco>>Ios >> Version 15.5\(3\)s9

    Cisco>>Ios >> Version 15.5\(3\)s9a

    Cisco>>Ios >> Version 15.5\(3\)s10

    Cisco>>Ios >> Version 15.5\(3\)s10a

    Cisco>>Ios >> Version 15.6\(3\)m2

    Cisco>>Ios >> Version 15.6\(3\)m2a

    Cisco>>Ios >> Version 15.6\(3\)m3

    Cisco>>Ios >> Version 15.6\(3\)m3a

    Cisco>>Ios >> Version 15.6\(3\)m4

    Cisco>>Ios >> Version 15.6\(3\)m5

    Cisco>>Ios >> Version 15.6\(3\)m6

    Cisco>>Ios >> Version 15.6\(3\)m6a

    Cisco>>Ios >> Version 15.6\(3\)m6b

    Cisco>>Ios >> Version 15.6\(3\)m7

    Cisco>>Ios >> Version 15.6\(3\)m8

    Cisco>>Ios >> Version 15.6\(3\)m9

    Cisco>>Ios >> Version 15.7\(3\)m

    Cisco>>Ios >> Version 15.7\(3\)m0a

    Cisco>>Ios >> Version 15.7\(3\)m1

    Cisco>>Ios >> Version 15.7\(3\)m2

    Cisco>>Ios >> Version 15.7\(3\)m3

    Cisco>>Ios >> Version 15.7\(3\)m4

    Cisco>>Ios >> Version 15.7\(3\)m4a

    Cisco>>Ios >> Version 15.7\(3\)m4b

    Cisco>>Ios >> Version 15.7\(3\)m5

    Cisco>>Ios >> Version 15.7\(3\)m6

    Cisco>>Ios >> Version 15.7\(3\)m7

    Cisco>>Ios >> Version 15.8\(3\)m

    Cisco>>Ios >> Version 15.8\(3\)m0a

    Cisco>>Ios >> Version 15.8\(3\)m0b

    Cisco>>Ios >> Version 15.8\(3\)m1

    Cisco>>Ios >> Version 15.8\(3\)m1a

    Cisco>>Ios >> Version 15.8\(3\)m2

    Cisco>>Ios >> Version 15.8\(3\)m2a

    Cisco>>Ios >> Version 15.8\(3\)m3

    Cisco>>Ios >> Version 15.8\(3\)m3a

    Cisco>>Ios >> Version 15.8\(3\)m3b

    Cisco>>Ios >> Version 15.8\(3\)m4

    Cisco>>Ios >> Version 15.8\(3\)m5

    Cisco>>Ios >> Version 15.9\(3\)m

    Cisco>>Ios >> Version 15.9\(3\)m0a

    Cisco>>Ios >> Version 15.9\(3\)m1

    Cisco>>Ios >> Version 15.9\(3\)m2

    Cisco>>Ios >> Version 15.9\(3\)m2a

    Cisco>>Ios_xe >> Version 3.6.6e

    Cisco>>Ios_xe >> Version 3.6.7ae

    Cisco>>Ios_xe >> Version 3.6.7be

    Cisco>>Ios_xe >> Version 3.6.7e

    Cisco>>Ios_xe >> Version 3.6.8e

    Cisco>>Ios_xe >> Version 3.6.9ae

    Cisco>>Ios_xe >> Version 3.6.9e

    Cisco>>Ios_xe >> Version 3.6.10e

    Cisco>>Ios_xe >> Version 3.7.5e

    Cisco>>Ios_xe >> Version 3.8.4e

    Cisco>>Ios_xe >> Version 3.8.5ae

    Cisco>>Ios_xe >> Version 3.8.5e

    Cisco>>Ios_xe >> Version 3.8.6e

    Cisco>>Ios_xe >> Version 3.8.7e

    Cisco>>Ios_xe >> Version 3.8.8e

    Cisco>>Ios_xe >> Version 3.8.9e

    Cisco>>Ios_xe >> Version 3.8.10e

    Cisco>>Ios_xe >> Version 3.9.1e

    Cisco>>Ios_xe >> Version 3.9.2be

    Cisco>>Ios_xe >> Version 3.9.2e

    Cisco>>Ios_xe >> Version 3.10.0ce

    Cisco>>Ios_xe >> Version 3.10.0e

    Cisco>>Ios_xe >> Version 3.10.1ae

    Cisco>>Ios_xe >> Version 3.10.1e

    Cisco>>Ios_xe >> Version 3.10.1se

    Cisco>>Ios_xe >> Version 3.10.2e

    Cisco>>Ios_xe >> Version 3.10.3e

    Cisco>>Ios_xe >> Version 3.11.0e

    Cisco>>Ios_xe >> Version 3.11.1ae

    Cisco>>Ios_xe >> Version 3.11.1e

    Cisco>>Ios_xe >> Version 3.11.2ae

    Cisco>>Ios_xe >> Version 3.11.2e

    Cisco>>Ios_xe >> Version 3.11.3ae

    Cisco>>Ios_xe >> Version 3.11.3e

    Cisco>>Ios_xe >> Version 3.16.4as

    Cisco>>Ios_xe >> Version 3.16.4bs

    Cisco>>Ios_xe >> Version 3.16.4cs

    Cisco>>Ios_xe >> Version 3.16.4ds

    Cisco>>Ios_xe >> Version 3.16.4es

    Cisco>>Ios_xe >> Version 3.16.4gs

    Cisco>>Ios_xe >> Version 3.16.4s

    Cisco>>Ios_xe >> Version 3.16.5as

    Cisco>>Ios_xe >> Version 3.16.5bs

    Cisco>>Ios_xe >> Version 3.16.5s

    Cisco>>Ios_xe >> Version 3.16.6bs

    Cisco>>Ios_xe >> Version 3.16.6s

    Cisco>>Ios_xe >> Version 3.16.7as

    Cisco>>Ios_xe >> Version 3.16.7bs

    Cisco>>Ios_xe >> Version 3.16.7s

    Cisco>>Ios_xe >> Version 3.16.8s

    Cisco>>Ios_xe >> Version 3.16.9s

    Cisco>>Ios_xe >> Version 3.16.10as

    Cisco>>Ios_xe >> Version 3.16.10s

    Cisco>>Ios_xe >> Version 16.3.2

    Cisco>>Ios_xe >> Version 16.3.3

    Cisco>>Ios_xe >> Version 16.3.4

    Cisco>>Ios_xe >> Version 16.3.5

    Cisco>>Ios_xe >> Version 16.3.5b

    Cisco>>Ios_xe >> Version 16.3.6

    Cisco>>Ios_xe >> Version 16.3.7

    Cisco>>Ios_xe >> Version 16.3.8

    Cisco>>Ios_xe >> Version 16.3.9

    Cisco>>Ios_xe >> Version 16.3.10

    Cisco>>Ios_xe >> Version 16.3.11

    Cisco>>Ios_xe >> Version 16.4.1

    Cisco>>Ios_xe >> Version 16.4.2

    Cisco>>Ios_xe >> Version 16.4.3

    Cisco>>Ios_xe >> Version 16.5.1

    Cisco>>Ios_xe >> Version 16.5.1a

    Cisco>>Ios_xe >> Version 16.5.1b

    Cisco>>Ios_xe >> Version 16.5.2

    Cisco>>Ios_xe >> Version 16.5.3

    Cisco>>Ios_xe >> Version 16.6.1

    Cisco>>Ios_xe >> Version 16.6.2

    Cisco>>Ios_xe >> Version 16.6.3

    Cisco>>Ios_xe >> Version 16.6.4

    Cisco>>Ios_xe >> Version 16.6.4a

    Cisco>>Ios_xe >> Version 16.6.4s

    Cisco>>Ios_xe >> Version 16.6.5

    Cisco>>Ios_xe >> Version 16.6.5a

    Cisco>>Ios_xe >> Version 16.6.5b

    Cisco>>Ios_xe >> Version 16.6.6

    Cisco>>Ios_xe >> Version 16.6.7

    Cisco>>Ios_xe >> Version 16.6.7a

    Cisco>>Ios_xe >> Version 16.6.8

    Cisco>>Ios_xe >> Version 16.7.1

    Cisco>>Ios_xe >> Version 16.7.1a

    Cisco>>Ios_xe >> Version 16.7.1b

    Cisco>>Ios_xe >> Version 16.7.2

    Cisco>>Ios_xe >> Version 16.7.3

    Cisco>>Ios_xe >> Version 16.7.4

    Cisco>>Ios_xe >> Version 16.8.1

    Cisco>>Ios_xe >> Version 16.8.1a

    Cisco>>Ios_xe >> Version 16.8.1b

    Cisco>>Ios_xe >> Version 16.8.1c

    Cisco>>Ios_xe >> Version 16.8.1d

    Cisco>>Ios_xe >> Version 16.8.1e

    Cisco>>Ios_xe >> Version 16.8.1s

    Cisco>>Ios_xe >> Version 16.8.2

    Cisco>>Ios_xe >> Version 16.8.3

    Cisco>>Ios_xe >> Version 16.9.1

    Cisco>>Ios_xe >> Version 16.9.1a

    Cisco>>Ios_xe >> Version 16.9.1b

    Cisco>>Ios_xe >> Version 16.9.1c

    Cisco>>Ios_xe >> Version 16.9.1d

    Cisco>>Ios_xe >> Version 16.9.1s

    Cisco>>Ios_xe >> Version 16.9.2

    Cisco>>Ios_xe >> Version 16.9.2a

    Cisco>>Ios_xe >> Version 16.9.2s

    Cisco>>Ios_xe >> Version 16.9.3

    Cisco>>Ios_xe >> Version 16.9.3a

    Cisco>>Ios_xe >> Version 16.9.3h

    Cisco>>Ios_xe >> Version 16.9.3s

    Cisco>>Ios_xe >> Version 16.9.4

    Cisco>>Ios_xe >> Version 16.9.4c

    Cisco>>Ios_xe >> Version 16.9.5

    Cisco>>Ios_xe >> Version 16.9.5f

    Cisco>>Ios_xe >> Version 16.9.6

    Cisco>>Ios_xe >> Version 16.10.1

    Cisco>>Ios_xe >> Version 16.10.1a

    Cisco>>Ios_xe >> Version 16.10.1b

    Cisco>>Ios_xe >> Version 16.10.1c

    Cisco>>Ios_xe >> Version 16.10.1d

    Cisco>>Ios_xe >> Version 16.10.1e

    Cisco>>Ios_xe >> Version 16.10.1f

    Cisco>>Ios_xe >> Version 16.10.1g

    Cisco>>Ios_xe >> Version 16.10.1s

    Cisco>>Ios_xe >> Version 16.10.2

    Cisco>>Ios_xe >> Version 16.10.3

    Cisco>>Ios_xe >> Version 16.11.1

    Cisco>>Ios_xe >> Version 16.11.1a

    Cisco>>Ios_xe >> Version 16.11.1b

    Cisco>>Ios_xe >> Version 16.11.1c

    Cisco>>Ios_xe >> Version 16.11.1s

    Cisco>>Ios_xe >> Version 16.11.2

    Cisco>>Ios_xe >> Version 16.12.1

    Cisco>>Ios_xe >> Version 16.12.1a

    Cisco>>Ios_xe >> Version 16.12.1c

    Cisco>>Ios_xe >> Version 16.12.1s

    Cisco>>Ios_xe >> Version 16.12.1t

    Cisco>>Ios_xe >> Version 16.12.1w

    Cisco>>Ios_xe >> Version 16.12.1x

    Cisco>>Ios_xe >> Version 16.12.1y

    Cisco>>Ios_xe >> Version 16.12.1z

    Cisco>>Ios_xe >> Version 16.12.2

    Cisco>>Ios_xe >> Version 16.12.2a

    Cisco>>Ios_xe >> Version 16.12.2s

    Cisco>>Ios_xe >> Version 16.12.2t

    Cisco>>Ios_xe >> Version 16.12.3

    Cisco>>Ios_xe >> Version 16.12.3a

    Cisco>>Ios_xe >> Version 16.12.3s

    Cisco>>Ios_xe >> Version 16.12.4

    Cisco>>Ios_xe >> Version 16.12.4a

    Cisco>>Ios_xe >> Version 17.1.1

    Cisco>>Ios_xe >> Version 17.1.1a

    Cisco>>Ios_xe >> Version 17.1.1s

    Cisco>>Ios_xe >> Version 17.1.1t

    Cisco>>Ios_xe >> Version 17.1.2

    Cisco>>Ios_xe >> Version 17.2.1

    Cisco>>Ios_xe >> Version 17.2.1a

    Cisco>>Ios_xe >> Version 17.2.1r

    Cisco>>Ios_xe >> Version 17.2.1v

    Cisco>>Ios_xe >> Version 17.2.2

    Cisco>>Ios_xe >> Version 17.3.1

    Cisco>>Ios_xe >> Version 17.3.1a

    Cisco>>Ios_xe >> Version 17.3.1w

    Cisco>>Ios_xe >> Version 17.3.2

    Cisco>>Ios_xe >> Version 17.3.2a

    Références