CVE Vulnerability

CVE-2018-5389

The Internet Key Exchange v1 main mode is vulnerable to offline dictionary or brute force attacks. Reusing a key pair across different versions and modes of IKE could lead to cross-protocol authentication bypasses. It is well known, that the aggressive mode of IKEv1 PSK is vulnerable to offline dictionary or brute force attacks. For the main mode, however, only an online attack against PSK authentication was thought to be feasible. This vulnerability could allow an attacker to recover a weak Pre-Shared Key or enable the impersonation of a victim host or network.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

5.9 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://www.usenix.org/system/files/conference/usenixsecurity18/sec18-felsch.pdf Third Party Advisory
https://www.kb.cert.org/vuls/id/857035 Third Party Advisory US Government Resource
https://web-in-security.blogspot.com/2018/08/practical-dictionary-attack-on-ipsec-ike.html Exploit Third Party Advisory
https://blogs.cisco.com/security/great-cipher-but-where-did-you-get-that-key Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:ietf:internet_key_exchange:1.0:*:*:*:*:*:*:*
Information

Published : 2018-09-06 09:29

Updated : 2019-10-09 11:41

NVD link : CVE-2018-5389

Mitre link : CVE-2018-5389

Products Affected
No products.
CWE
CWE-521