FKIE_CVE-2024-39894

Vulnerability from fkie_nvd - Published: 2024-07-02 18:15 - Updated: 2026-06-17 07:42
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Summary
OpenSSH 9.5 through 9.7 before 9.8 sometimes allows timing attacks against echo-off password entry (e.g., for su and Sudo) because of an ObscureKeystrokeTiming logic error. Similarly, other timing attacks against keystroke entry could occur.
References
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2024/07/03/6
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2024/07/23/4
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2024/07/23/6
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2024/07/28/3
cve@mitre.orghttps://crzphil.github.io/posts/ssh-obfuscation-bypass/
cve@mitre.orghttps://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html
cve@mitre.orghttps://news.ycombinator.com/item?id=41508530
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20240712-0004/
cve@mitre.orghttps://www.openssh.com/txt/release-9.8
cve@mitre.orghttps://www.openwall.com/lists/oss-security/2024/07/02/1
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2024/Sep/33
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/07/03/6
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/07/23/4
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/07/23/6
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/07/28/3
af854a3a-2127-422b-91ae-364da2661108https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20240712-0004/
af854a3a-2127-422b-91ae-364da2661108https://www.freebsd.org/security/advisories/FreeBSD-SA-25:01.openssh.asc
af854a3a-2127-422b-91ae-364da2661108https://www.openssh.com/txt/release-9.8
af854a3a-2127-422b-91ae-364da2661108https://www.openwall.com/lists/oss-security/2024/07/02/1
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    },
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:openbsd:openssh:9.5:-:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "openssh",
          "vendor": "openbsd",
          "versions": [
            {
              "lessThanOrEqual": "9.7",
              "status": "affected",
              "version": "9.5",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "OpenSSH 9.5 through 9.7 before 9.8 sometimes allows timing attacks against echo-off password entry (e.g., for su and Sudo) because of an ObscureKeystrokeTiming logic error. Similarly, other timing attacks against keystroke entry could occur."
    },
    {
      "lang": "es",
      "value": "OpenSSH 9.5 a 9.7 anterior a 9.8 a veces permite ataques de sincronizaci\u00f3n contra la entrada de contrase\u00f1a sin eco (por ejemplo, para su y Sudo) debido a un error l\u00f3gico de ObscureKeystrokeTiming. De manera similar, podr\u00edan ocurrir otros ataques de sincronizaci\u00f3n contra la entrada de teclas."
    }
  ],
  "id": "CVE-2024-39894",
  "lastModified": "2026-06-17T07:42:58.770",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-39894",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-07-03T13:15:38.073610Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-07-02T18:15:03.710",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "http://www.openwall.com/lists/oss-security/2024/07/03/6"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.openwall.com/lists/oss-security/2024/07/23/4"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.openwall.com/lists/oss-security/2024/07/23/6"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.openwall.com/lists/oss-security/2024/07/28/3"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://crzphil.github.io/posts/ssh-obfuscation-bypass/"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://news.ycombinator.com/item?id=41508530"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://security.netapp.com/advisory/ntap-20240712-0004/"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://www.openssh.com/txt/release-9.8"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://www.openwall.com/lists/oss-security/2024/07/02/1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://seclists.org/fulldisclosure/2024/Sep/33"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2024/07/03/6"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2024/07/23/4"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2024/07/23/6"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2024/07/28/3"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://security.netapp.com/advisory/ntap-20240712-0004/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.freebsd.org/security/advisories/FreeBSD-SA-25:01.openssh.asc"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.openssh.com/txt/release-9.8"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.openwall.com/lists/oss-security/2024/07/02/1"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-367"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}



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