Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.008
EPSS Ranking 73.6%
CVSS Severity
CVSS v3 Score 5.9
CVSS v2 Score 4.3
References
- https://blogs.cisco.com/security/great-cipher-but-where-did-you-get-that-key
- https://my.f5.com/manage/s/article/K42378447
- https://web-in-security.blogspot.com/2018/08/practical-dictionary-attack-on-ipsec-ike.html
- https://www.kb.cert.org/vuls/id/857035
- https://www.usenix.org/system/files/conference/usenixsecurity18/sec18-felsch.pdf
- https://blogs.cisco.com/security/great-cipher-but-where-did-you-get-that-key
- https://my.f5.com/manage/s/article/K42378447
- https://web-in-security.blogspot.com/2018/08/practical-dictionary-attack-on-ipsec-ike.html
- https://www.kb.cert.org/vuls/id/857035
- https://www.usenix.org/system/files/conference/usenixsecurity18/sec18-felsch.pdf
Products affected by CVE-2018-5389
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cpe:2.3:a:ietf:internet_key_exchange:1.0