CVE-2019-25017
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).
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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.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
- Puntuación base: 5.9
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.37%
- Percentil entre todas las CVEs puntuadas: 71
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-863
Referencias
JSON original (NVD)
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"published": "2021-02-02T18:15:10.937",
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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 detectó un problema en rcp en MIT krb5-appl versiones hasta 1.0.3. Debido a que la implementación de rcp es derivado desde rcp 1983, el servidor elige qué archivos y directorios son enviados al cliente. Sin embargo, el cliente rcp solo lleva a cabo una comprobación superficial del nombre del objeto devuelto (solo se evitan los ataques de saltos de directorio). Un servidor rcp malicioso (o un atacante Man-in-The-Middle) puede sobrescribir archivos arbitrarios en el directorio de destino del cliente rcp. Si una operación recursiva (-r) se produce, el servidor también puede manipular subdirectorios (por ejemplo, para sobrescribir el archivo .ssh/allowed_keys). Este problema es similar al CVE-2019-6111 y CVE-2019-7283. NOTA: MIT krb5-appl no es compatible con versiones anteriores, pero algunas distribuciones de Linux lo entregan. El código afectado es removido del producto MIT Kerberos 5 (también se conoce como krb5) compatible hace muchos años, en la versión 1.8"
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"lastModified": "2026-06-17T02:31:29.350",
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