CVE-2019-6111

An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the server chooses which files/directories are sent to the client. However, the scp client only performs cursory validation of the object name returned (only directory traversal attacks are prevented). A malicious scp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the scp 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).

Referanslar

• http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00058.html
• http://www.openwall.com/lists/oss-security/2019/04/18/1
• http://www.openwall.com/lists/oss-security/2022/08/02/1
• http://www.securityfocus.com/bid/106741
• https://access.redhat.com/errata/RHSA-2019:3702
• https://bugzilla.redhat.com/show_bug.cgi?id=1677794