CVE-2022-20694 : Détail

CVE-2022-20694

6.8
/
Moyen
0.13%V3
Network
2022-04-15
14h15 +00:00
2024-11-06
16h26 +00:00
CVE.org
NVD
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Descriptions du CVE

Cisco IOS XE Software Border Gateway Protocol Resource Public Key Infrastructure Denial of Service Vulnerability

A vulnerability in the implementation of the Resource Public Key Infrastructure (RPKI) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the Border Gateway Protocol (BGP) process to crash, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of a specific RPKI to Router (RTR) Protocol packet header. An attacker could exploit this vulnerability by compromising the RPKI validator server and sending a specifically crafted RTR packet to an affected device. Alternatively, the attacker could use man-in-the-middle techniques to impersonate the RPKI validator server and send a crafted RTR response packet over the established RTR TCP connection to the affected device. A successful exploit could allow the attacker to cause a DoS condition because the BGP process could constantly restart and BGP routing could become unstable.

Informations du CVE

Faiblesses connexes

CWE-ID Nom de la faiblesse Source
CWE-617 Reachable Assertion
The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.

Métriques

Métriques Score Gravité CVSS Vecteur Source
V3.1 6.8 MEDIUM CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

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.

High

successful attack depends on conditions beyond the attacker's control. That is, a successful attack cannot be accomplished at will, but requires the attacker to invest in some measurable amount of effort in preparation or execution against the vulnerable component before a successful attack can be expected.

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.

High

There is a total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

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 7.1 AV:N/AC:M/Au:N/C:N/I:N/A:C [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_xe >> Version 3.7.0bs

Cisco>>Ios_xe >> Version 3.7.0s

Cisco>>Ios_xe >> Version 3.7.0xas

Cisco>>Ios_xe >> Version 3.7.0xbs

Cisco>>Ios_xe >> Version 3.7.1as

Cisco>>Ios_xe >> Version 3.7.1s

Cisco>>Ios_xe >> Version 3.7.2s

Cisco>>Ios_xe >> Version 3.7.2ts

Cisco>>Ios_xe >> Version 3.7.3s

Cisco>>Ios_xe >> Version 3.7.4as

Cisco>>Ios_xe >> Version 3.7.4s

Cisco>>Ios_xe >> Version 3.7.5s

Cisco>>Ios_xe >> Version 3.7.6s

Cisco>>Ios_xe >> Version 3.7.7s

Cisco>>Ios_xe >> Version 3.7.8s

Cisco>>Ios_xe >> Version 3.8.0s

Cisco>>Ios_xe >> Version 3.8.1s

Cisco>>Ios_xe >> Version 3.8.2s

Cisco>>Ios_xe >> Version 3.9.0as

Cisco>>Ios_xe >> Version 3.9.0s

Cisco>>Ios_xe >> Version 3.9.0xas

Cisco>>Ios_xe >> Version 3.9.1as

Cisco>>Ios_xe >> Version 3.9.1s

Cisco>>Ios_xe >> Version 3.9.2s

Cisco>>Ios_xe >> Version 3.10.0s

Cisco>>Ios_xe >> Version 3.10.1s

Cisco>>Ios_xe >> Version 3.10.1xbs

Cisco>>Ios_xe >> Version 3.10.1xcs

Cisco>>Ios_xe >> Version 3.10.2as

Cisco>>Ios_xe >> Version 3.10.2s

Cisco>>Ios_xe >> Version 3.10.2ts

Cisco>>Ios_xe >> Version 3.10.3s

Cisco>>Ios_xe >> Version 3.10.4s

Cisco>>Ios_xe >> Version 3.10.5s

Cisco>>Ios_xe >> Version 3.10.6s

Cisco>>Ios_xe >> Version 3.10.7s

Cisco>>Ios_xe >> Version 3.10.8as

Cisco>>Ios_xe >> Version 3.10.8s

Cisco>>Ios_xe >> Version 3.10.9s

Cisco>>Ios_xe >> Version 3.10.10s

Cisco>>Ios_xe >> Version 3.11.0s

Cisco>>Ios_xe >> Version 3.11.1s

Cisco>>Ios_xe >> Version 3.11.2s

Cisco>>Ios_xe >> Version 3.11.3s

Cisco>>Ios_xe >> Version 3.11.4s

Cisco>>Ios_xe >> Version 3.11.5e

Cisco>>Ios_xe >> Version 3.12.0as

Cisco>>Ios_xe >> Version 3.12.0s

Cisco>>Ios_xe >> Version 3.12.1s

Cisco>>Ios_xe >> Version 3.12.2s

Cisco>>Ios_xe >> Version 3.12.3s

Cisco>>Ios_xe >> Version 3.12.4s

Cisco>>Ios_xe >> Version 3.13.0as

Cisco>>Ios_xe >> Version 3.13.0s

Cisco>>Ios_xe >> Version 3.13.1s

Cisco>>Ios_xe >> Version 3.13.2as

Cisco>>Ios_xe >> Version 3.13.2s

Cisco>>Ios_xe >> Version 3.13.3s

Cisco>>Ios_xe >> Version 3.13.4s

Cisco>>Ios_xe >> Version 3.13.5as

Cisco>>Ios_xe >> Version 3.13.5s

Cisco>>Ios_xe >> Version 3.13.6as

Cisco>>Ios_xe >> Version 3.13.6bs

Cisco>>Ios_xe >> Version 3.13.6s

Cisco>>Ios_xe >> Version 3.13.7as

Cisco>>Ios_xe >> Version 3.13.7s

Cisco>>Ios_xe >> Version 3.13.8s

Cisco>>Ios_xe >> Version 3.13.9s

Cisco>>Ios_xe >> Version 3.13.10s

Cisco>>Ios_xe >> Version 3.14.0s

Cisco>>Ios_xe >> Version 3.14.1s

Cisco>>Ios_xe >> Version 3.14.2s

Cisco>>Ios_xe >> Version 3.14.3s

Cisco>>Ios_xe >> Version 3.14.4s

Cisco>>Ios_xe >> Version 3.15.0s

Cisco>>Ios_xe >> Version 3.15.1cs

Cisco>>Ios_xe >> Version 3.15.1s

Cisco>>Ios_xe >> Version 3.15.1xbs

Cisco>>Ios_xe >> Version 3.15.2s

Cisco>>Ios_xe >> Version 3.15.3s

Cisco>>Ios_xe >> Version 3.15.4s

Cisco>>Ios_xe >> Version 3.16.0as

Cisco>>Ios_xe >> Version 3.16.0bs

Cisco>>Ios_xe >> Version 3.16.0cs

Cisco>>Ios_xe >> Version 3.16.0s

Cisco>>Ios_xe >> Version 3.16.1as

Cisco>>Ios_xe >> Version 3.16.1s

Cisco>>Ios_xe >> Version 3.16.2as

Cisco>>Ios_xe >> Version 3.16.2bs

Cisco>>Ios_xe >> Version 3.16.2s

Cisco>>Ios_xe >> Version 3.16.3as

Cisco>>Ios_xe >> Version 3.16.3s

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 3.16.10bs

Cisco>>Ios_xe >> Version 3.16.10cs

Cisco>>Ios_xe >> Version 3.16.10s

Cisco>>Ios_xe >> Version 3.17.0s

Cisco>>Ios_xe >> Version 3.17.1as

Cisco>>Ios_xe >> Version 3.17.1s

Cisco>>Ios_xe >> Version 3.17.2s

Cisco>>Ios_xe >> Version 3.17.3s

Cisco>>Ios_xe >> Version 3.17.4s

Cisco>>Ios_xe >> Version 3.18.0as

Cisco>>Ios_xe >> Version 3.18.0s

Cisco>>Ios_xe >> Version 3.18.0sp

Cisco>>Ios_xe >> Version 3.18.1asp

Cisco>>Ios_xe >> Version 3.18.1bsp

Cisco>>Ios_xe >> Version 3.18.1csp

Cisco>>Ios_xe >> Version 3.18.1gsp

Cisco>>Ios_xe >> Version 3.18.1hsp

Cisco>>Ios_xe >> Version 3.18.1isp

Cisco>>Ios_xe >> Version 3.18.1s

Cisco>>Ios_xe >> Version 3.18.1sp

Cisco>>Ios_xe >> Version 3.18.2asp

Cisco>>Ios_xe >> Version 3.18.2s

Cisco>>Ios_xe >> Version 3.18.2sp

Cisco>>Ios_xe >> Version 3.18.3asp

Cisco>>Ios_xe >> Version 3.18.3bsp

Cisco>>Ios_xe >> Version 3.18.3s

Cisco>>Ios_xe >> Version 3.18.3sp

Cisco>>Ios_xe >> Version 3.18.4s

Cisco>>Ios_xe >> Version 3.18.4sp

Cisco>>Ios_xe >> Version 3.18.5sp

Cisco>>Ios_xe >> Version 3.18.6sp

Cisco>>Ios_xe >> Version 3.18.7sp

Cisco>>Ios_xe >> Version 3.18.8asp

Cisco>>Ios_xe >> Version 3.18.8sp

Cisco>>Ios_xe >> Version 3.18.9sp

Cisco>>Ios_xe >> Version 3.18.10sp

Cisco>>Ios_xe >> Version 16.1.1

Cisco>>Ios_xe >> Version 16.1.2

Cisco>>Ios_xe >> Version 16.1.3

Cisco>>Ios_xe >> Version 16.2.1

Cisco>>Ios_xe >> Version 16.2.2

Cisco>>Ios_xe >> Version 16.3.1

Cisco>>Ios_xe >> Version 16.3.1a

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 16.6.9

Cisco>>Ios_xe >> Version 16.6.10

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 16.9.7

Cisco>>Ios_xe >> Version 16.9.8

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 17.6.1w

Références