CVE-2018-5389
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure.
- Exploit odds
- 3.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- No patch or advisory is linked yet. Look at mitigations or restrict exposure.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 3.1% in the next 30 days (EPSS).
- Severity: 5.9 MEDIUM (CVSS).
- Fix: none linked yet, which raises it.
Details
- Published
- Last modified
- Exploit probability
- 3.1% · EPSS, next 30 days
- Weakness
- CWE-521
- Record status
- Modified
Affected
- Ietf Internet Key Exchange 1.0
Attack profile CVSS 3.0 · 5.9
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Raw vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2018-5389.md and follow it. Check whether this project is affected by CVE-2018-5389. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
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