Medium severity5.9NVD Advisory· Published Sep 6, 2018· Updated Jun 17, 2026
CVE-2018-5389
CVE-2018-5389
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.
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Affected products
1- Range: 5.5.1
Patches
Vulnerability mechanics
References
5- web-in-security.blogspot.com/2018/08/practical-dictionary-attack-on-ipsec-ike.htmlnvdExploitThird Party Advisory
- blogs.cisco.com/security/great-cipher-but-where-did-you-get-that-keynvdThird Party Advisory
- www.kb.cert.org/vuls/id/857035nvdThird Party AdvisoryUS Government Resource
- www.usenix.org/system/files/conference/usenixsecurity18/sec18-felsch.pdfnvdThird Party Advisory
- my.f5.com/manage/s/article/K42378447nvd
News mentions
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