A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how OpenSSH mishandles error codes in specific conditions when verifying the host key. For an attack to be considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning the attack complexity high.
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No Fix Known
No patch has been released yet. Apply workarounds or mitigations where available.
Published
CVE disclosed publicly
Last Modified
Most recent update
Indexed to CVEInsight
Added to this platform
AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
10
Affected Products
26
References
openbsd / openssh
| - |
| openbsd | openssh | - | - |
| netapp | active_iq_unified_manager | - | - |
| netapp | ontap | - | - |
| redhat | openshift_container_platform | - | - |
| debian | debian_linux | - | - |
| debian | debian_linux | - | - |
| redhat | enterprise_linux | - | - |
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Exploitability
Impact