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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Mon, 03 Mar 2025 18:45:00 +0000
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Description | 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. | |
Title | Openssh: machine-in-the-middle attack if verifyhostkeydns is enabled | |
First Time appeared |
Redhat
Redhat enterprise Linux Redhat openshift |
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Weaknesses | CWE-390 | |
CPEs | cpe:/a:redhat:openshift:4 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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Vendors & Products |
Redhat
Redhat enterprise Linux Redhat openshift |
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cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published: 2025-02-18T18:27:16.843Z
Updated: 2025-03-12T07:16:38.979Z
Reserved: 2025-02-10T18:31:47.978Z
Link: CVE-2025-26465

Updated: 2025-03-03T17:48:15.682Z

Status : Awaiting Analysis
Published: 2025-02-18T19:15:29.230
Modified: 2025-03-03T18:15:40.247
Link: CVE-2025-26465
