fkie_cve-2019-25017
Vulnerability from fkie_nvd
Published
2021-02-02 18:15
Modified
2024-11-21 04:39
Severity ?
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
| ▶ | URL | Tags | |
|---|---|---|---|
| cve@mitre.org | https://bugzilla.suse.com/show_bug.cgi?id=1131109 | Exploit, Issue Tracking, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://bugzilla.suse.com/show_bug.cgi?id=1131109 | Exploit, Issue Tracking, Third Party Advisory |
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"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."
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"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"
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"id": "CVE-2019-25017",
"lastModified": "2024-11-21T04:39:44.953",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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