FKIE_CVE-2019-25017

Vulnerability from fkie_nvd - Published: 2021-02-02 18:15 - Updated: 2024-11-21 04:39
Severity ?
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Summary
An issue was discovered in rcp in MIT krb5-appl through 1.0.3. Due to the rcp implementation being derived from 1983 rcp, the server chooses which files/directories are sent to the client. However, the rcp client only performs cursory validation of the object name returned (only directory traversal attacks are prevented). A malicious rcp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the rcp client target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as well (for example, to overwrite the .ssh/authorized_keys file). This issue is similar to CVE-2019-6111 and CVE-2019-7283. NOTE: MIT krb5-appl is not supported upstream but is shipped by a few Linux distributions. The affected code was removed from the supported MIT Kerberos 5 (aka krb5) product many years ago, at version 1.8.
References
cve@mitre.orghttps://bugzilla.suse.com/show_bug.cgi?id=1131109Exploit, Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.suse.com/show_bug.cgi?id=1131109Exploit, Issue Tracking, Third Party Advisory
Impacted products
Vendor Product Version
mit krb5-appl *
To clipboard 

{
  "configurations": [
    {
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              "criteria": "cpe:2.3:a:mit:krb5-appl:*:*:*:*:*:*:*:*",
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              "versionEndIncluding": "1.0.3",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in rcp in MIT krb5-appl through 1.0.3. Due to the rcp implementation being derived from 1983 rcp, the server chooses which files/directories are sent to the client. However, the rcp client only performs cursory validation of the object name returned (only directory traversal attacks are prevented). A malicious rcp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the rcp client target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as well (for example, to overwrite the .ssh/authorized_keys file). This issue is similar to CVE-2019-6111 and CVE-2019-7283. NOTE: MIT krb5-appl is not supported upstream but is shipped by a few Linux distributions. The affected code was removed from the supported MIT Kerberos 5 (aka krb5) product many years ago, at version 1.8."
    },
    {
      "lang": "es",
      "value": "Se detect\u00f3 un problema en rcp en MIT krb5-appl versiones hasta 1.0.3.\u0026#xa0;Debido a que la implementaci\u00f3n de rcp es derivado desde rcp 1983, el servidor elige qu\u00e9 archivos y directorios son enviados al cliente.\u0026#xa0;Sin embargo, el cliente rcp solo lleva a cabo una comprobaci\u00f3n superficial del nombre del objeto devuelto (solo se evitan los ataques de saltos de directorio).\u0026#xa0;Un servidor rcp malicioso (o un atacante Man-in-The-Middle) puede sobrescribir archivos arbitrarios en el directorio de destino del cliente rcp.\u0026#xa0;Si una operaci\u00f3n recursiva (-r) se produce, el servidor tambi\u00e9n puede manipular subdirectorios (por ejemplo, para sobrescribir el archivo .ssh/allowed_keys).\u0026#xa0;Este problema es similar al CVE-2019-6111 y CVE-2019-7283.\u0026#xa0;NOTA: MIT krb5-appl no es compatible con versiones anteriores, pero algunas distribuciones de Linux lo entregan.\u0026#xa0;El c\u00f3digo afectado es removido del producto MIT Kerberos 5 (tambi\u00e9n se conoce como krb5) compatible hace muchos a\u00f1os, en la versi\u00f3n 1.8"
    }
  ],
  "id": "CVE-2019-25017",
  "lastModified": "2024-11-21T04:39:44.953",
  "metrics": {
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        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.8,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:P",
          "version": "2.0"
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        "exploitabilityScore": 8.6,
        "impactScore": 4.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
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          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
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          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
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  "published": "2021-02-02T18:15:10.937",
  "references": [
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      "url": "https://bugzilla.suse.com/show_bug.cgi?id=1131109"
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
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          "lang": "en",
          "value": "CWE-863"
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      "source": "nvd@nist.gov",
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}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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