CVEvulnerability
CVE-2018-5389
5.9 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2018-09-06
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 5.9 MEDIUM — CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:P/I:N/A:N
- Weaknesses
- CWE-521
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.
Affected configurations
• ietf internet key exchange 1.0
Related
Weakness · CWE (1)
- CWE-521 Weak Password Requirements weakness
References
- https://blogs.cisco.com/security/great-cipher-but-where-did-you-get-that-key Third Party Advisory
- https://my.f5.com/manage/s/article/K42378447 my.f5.com
- 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
- https://blogs.cisco.com/security/great-cipher-but-where-did-you-get-that-key Third Party Advisory
- https://my.f5.com/manage/s/article/K42378447 my.f5.com
- 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