CVE-2018-5389 Detail

Current Description

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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  5.9 MEDIUM
Vector:  CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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

Weakness Enumeration

CWE-ID CWE Name Source
CWE-521 Weak Password Requirements cwe source acceptance level NIST  
CWE-323 Reusing a Nonce, Key Pair in Encryption Reference acceptance level CERT/CC  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-5389
NVD Published Date:
09/06/2018
NVD Last Modified:
10/09/2019
Source:
MITRE