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    1 vulnerability by VyOS

    CVE-2025-30095 (GCVE-0-2025-30095)

    Vulnerability from cvelistv5 โ€“ Published: 2025-03-31 00:00 โ€“ Updated: 2025-04-21 18:55
    VLAI
    Summary
    VyOS 1.3 through 1.5 (fixed in 1.4.2) or any Debian-based system using dropbear in combination with live-build has the same Dropbear private host keys across different installations. Thus, an attacker can conduct active man-in-the-middle attacks against SSH connections if Dropbear is enabled as the SSH daemon. I n VyOS, this is not the default configuration for the system SSH daemon, but is for the console service. To mitigate this, one can run "rm -f /etc/dropbear/*key*" and/or "rm -f /etc/dropbear-initramfs/*key*" and then dropbearkey -t rsa -s 4096 -f /etc/dropbear_rsa_host_key and reload the service or reboot the system before using Dropbear as the SSH daemon (this clears out all keys mistakenly built into the release image) or update to the latest version of VyOS 1.4 or 1.5. Note that this vulnerability is not unique to VyOS and may appear in any Debian-based Linux distribution that uses Dropbear in combination with live-build, which has a safeguard against this behavior in OpenSSH but no equivalent one for Dropbear.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator ยท CISA-ADP (v2.0.3)
    Decision recorded 2025-03-31 21:08 UTC
    CWE
    • CWE-321 - Use of Hard-coded Cryptographic Key
    Assigner
    mitre CNA
    Impacted products
    Vendor Product Version
    VyOS VyOS Affected: 0 , < 1.4.2 (custom)
    Affected: 1.5 , < 1.5-stream-2025-Q2 (custom)
    Create a notification for this product.
    Show details on NVD website

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