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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-02-02T17:23:58

Updated: 2024-08-05T03:00:18.924Z

Reserved: 2021-02-02T00:00:00

Link: CVE-2019-25017

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2021-02-02T18:15:10.937

Modified: 2021-07-21T11:39:23.747

Link: CVE-2019-25017

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-02-02T00:00:00Z

Links: CVE-2019-25017 - Bugzilla