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    4 vulnerabilities by ntpsec

    CVE-2026-18321 (GCVE-0-2026-18321)

    Vulnerability from cvelistv5 – Published: 2026-07-31 18:04 – Updated: 2026-07-31 18:54
    VLAI
    Title
    Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in ntpsec
    Summary
    Buffer overflow in NTPsec's Zyfer refclock allows local attacker to crash ntpd
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-07-31 18:54 UTC
    CWE
    • CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
    References
    Impacted products
    Vendor Product Version
    NTPsec ntpsec Affected: 0 , < 1.2.5 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-58459 (GCVE-0-2026-58459)

    Vulnerability from cvelistv5 – Published: 2026-07-09 16:14 – Updated: 2026-07-28 01:49 X_Open Source
    VLAI
    Title
    gpsd gpsprof Command Injection via gnuplot plot title subtype field
    Summary
    gpsd through release-3.27.5, fixed at commit 4c06658, contains a command injection vulnerability in gpsprof that allows attackers who control the GPS device subtype value to execute arbitrary shell commands by embedding backtick payloads in the gnuplot plot title without proper escaping. The subtype field sourced from a DEVICES JSON log entry or NMEA PGRMT sentence is written into a generated gnuplot program via a set title statement with only double-quote characters escaped, enabling arbitrary shell command execution as the user running gnuplot when the victim renders the generated plot through the gpsprof and gnuplot workflow.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-07-14 01:00 UTC
    CWE
    • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
    Impacted products
    Vendor Product Version
    ntpsec gpsd Affected: 0 , ≤ 3.27.5 (semver)
    Affected: 0 , ≤ 4c06658e988f4ced1a7a574ce082a22ef625df56 (git)
        cpe:2.3:a:gpsd_project:gpsd:*:*:*:*:*:*:*:*
    Create a notification for this product.
    Date Public
    2026-07-01 00:00
    Show details on NVD website

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    CVE-2023-4012 (GCVE-0-2023-4012)

    Vulnerability from cvelistv5 – Published: 2023-08-07 17:30 – Updated: 2026-06-22 04:07
    VLAI
    Title
    Incomplete Internal State Distinction in ntpsec
    Summary
    ntpd will crash if the server is not NTS-enabled (no certificate) and it receives an NTS-enabled client request (mode 3).
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2024-08-30 15:47 UTC
    CWE
    • CWE-372 - Incomplete Internal State Distinction
    Impacted products
    Vendor Product Version
    NTPsec ntpsec Affected: 1.2.2
    Create a notification for this product.
    Show details on NVD website

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    CVE-2021-22212 (GCVE-0-2021-22212)

    Vulnerability from cvelistv5 – Published: 2021-06-08 12:07 – Updated: 2024-08-03 18:37
    VLAI
    Summary
    ntpkeygen can generate keys that ntpd fails to parse. NTPsec 1.2.0 allows ntpkeygen to generate keys with '#' characters. ntpd then either pads, shortens the key, or fails to load these keys entirely, depending on the key type and the placement of the '#'. This results in the administrator not being able to use the keys as expected or the keys are shorter than expected and easier to brute-force, possibly resulting in MITM attacks between ntp clients and ntp servers. For short AES128 keys, ntpd generates a warning that it is padding them.
    CWE
    • Improper filtering of special elements in ntpsec
    Impacted products
    Vendor Product Version
    NTPsec ntpsec Affected: =1.2.0
    Create a notification for this product.
    Show details on NVD website

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                "vendor_data": [
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                "lang": "eng",
                "value": "Maciej Zenczykowski"
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                  "value": "ntpkeygen can generate keys that ntpd fails to parse. NTPsec 1.2.0 allows ntpkeygen to generate keys with \u0027#\u0027 characters. ntpd then either pads, shortens the key, or fails to load these keys entirely, depending on the key type and the placement of the \u0027#\u0027. This results in the administrator not being able to use the keys as expected or the keys are shorter than expected and easier to brute-force, possibly resulting in MITM attacks between ntp clients and ntp servers. For short AES128 keys, ntpd generates a warning that it is padding them."
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                "attackComplexity": "HIGH",
                "attackVector": "LOCAL",
                "availabilityImpact": "NONE",
                "baseScore": 3.9,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "HIGH",
                "privilegesRequired": "HIGH",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N",
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                      "value": "Improper filtering of special elements in ntpsec"
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              "reference_data": [
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                  "name": "https://gitlab.com/NTPsec/ntpsec/-/issues/699",
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                  "url": "https://gitlab.com/NTPsec/ntpsec/-/issues/699"
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                  "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1955859",
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                  "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3GIT2HYL5BQXPGKI6ZDNG473IEQ5WQF2/"
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        "dateReserved": "2021-01-05T00:00:00.000Z",
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