CVE-2018-0131

Severity Score

5.9

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability in the implementation of RSA-encrypted nonces in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to obtain the encrypted nonces of an Internet Key Exchange Version 1 (IKEv1) session. The vulnerability exists because the affected software responds incorrectly to decryption failures. An attacker could exploit this vulnerability sending crafted ciphertexts to a device configured with IKEv1 that uses RSA-encrypted nonces. A successful exploit could allow the attacker to obtain the encrypted nonces. Cisco Bug IDs: CSCve77140.

Una vulnerabilidad en la implementación de nonces cifrados por RSA en Cisco IOS Software y Cisco IOS XE Software podría permitir que un atacante remoto no autenticado obtenga los nonces cifrados de una sesión IKE v1(Internet Key Exchange Version 1). La vulnerabilidad existe debido a que el software afectado responde incorrectamente a los errores de descifrado. Un atacante podría explotar esta vulnerabilidad para enviar textos cifrados manipulados a u dispositivo configurado con IKEv1 que emplea nonces cifrados por RSA. Su explotación con éxito podría permitir que el atacante obtenga los nonces cifrados. Cisco Bug IDs: CSCve77140.

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-11-27 CVE Reserved
2018-08-14 CVE Published
2024-02-13 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-326: Inadequate Encryption Strength

CAPEC

References (3)

URL	Tag	Source
http://www.securityfocus.com/bid/105074	Third Party Advisory
http://www.securitytracker.com/id/1041539	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180813-rsa-nonce	2019-10-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(3\)s Search vendor "Cisco" for product "Ios" and version "15.5\(3\)s"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				15.5\(3\)s Search vendor "Cisco" for product "Ios Xe" and version "15.5\(3\)s"		-		Affected