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CVE-2018-5389 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://blogs.cisco.com/security/great-cipher-but-where-did-you-get-that-key	CVE	Third Party Advisory
https://my.f5.com/manage/s/article/K42378447	CVE
https://web-in-security.blogspot.com/2018/08/practical-dictionary-attack-on-ipsec-ike.html	CVE	ExploitThird Party Advisory
https://www.kb.cert.org/vuls/id/857035	CVE	Third Party AdvisoryUS Government Resource
https://www.usenix.org/system/files/conference/usenixsecurity18/sec18-felsch.pdf	CVE	Third Party Advisory
https://blogs.cisco.com/security/great-cipher-but-where-did-you-get-that-key	[email protected]	Third Party Advisory
https://my.f5.com/manage/s/article/K42378447	[email protected]
https://web-in-security.blogspot.com/2018/08/practical-dictionary-attack-on-ipsec-ike.html	[email protected]	ExploitThird Party Advisory
https://www.kb.cert.org/vuls/id/857035	[email protected]	Third Party AdvisoryUS Government Resource
https://www.usenix.org/system/files/conference/usenixsecurity18/sec18-felsch.pdf	[email protected]	Third Party Advisory

see all 10 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-521	Weak Password Requirements	[email protected]

Affected Products

Product	Versions
ietf internet key exchange	1.0
CPE cpe:2.3:a:ietf:internet_key_exchange:1.0:::::::* Remediation No remediation found in references.

Change History

8 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
Jun 24, 2024	CVE Modified	[email protected]
Jun 24, 2024	CVE Modified	[email protected]
May 14, 2024	CVE Modified	[email protected]
Oct 9, 2019	CVE Modified	[email protected]
Oct 3, 2019	CWE Remap	[email protected]
Nov 14, 2018	Initial Analysis	[email protected]