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
Link | Resource |
---|---|
https://bugzilla.suse.com/show_bug.cgi?id=1131109 | Exploit Issue Tracking Third Party Advisory |
Configurations
Information
Published : 2021-02-02 10:15
Updated : 2021-07-21 04:39
NVD link : CVE-2019-25017
Mitre link : CVE-2019-25017
JSON object : View
CWE
CWE-863
Incorrect Authorization
Products Affected
mit
- krb5-appl