CVE-2019-25017

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Summary

CVECVE-2019-25017
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-02-02 18:15:00 UTC
Updated2021-07-21 11:39:00 UTC
DescriptionAn 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.

Risk And Classification

Problem Types: CWE-863

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Mit Krb5-appl All All All All

References

ReferenceSourceLinkTags
Bug 1131109 – VUL-0: CVE-2019-25017,CVE-2019-25018: krb5-appl: affects krb5-appl kerberized rcp (related to CVE-2019-6111) MISC bugzilla.suse.com Exploit, Issue Tracking, Third Party Advisory
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