CVE-2019-6111 - log back

CVE-2019-6111 created at 25 Sep 2019 19:31:40
Severity
+ Medium
Remote
+ Remote
Type
+ Arbitrary file overwrite
Description
+ 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).
References
+ https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
+ https://github.com/openssh/openssh-portable/commit/391ffc4b9d31fa1f4ad566499fef9176ff8a07dc
Notes