Directory traversal in OpenSSH - #VU6127
Published: March 20, 2017
Vulnerability identifier: #VU6127
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenSSH
Affected software:
OpenSSH
OpenSSH
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists in sftp-client in portable version of OpenSSH when processing file names. A remote attacker can trick the victim to connect to a malicious SFTP server and perform operations on files with specially crafted file names, containing directory traversal sequences (e.g. ../../).
Successful exploitation of the vulnerability may allow an attacker to overwrite arbitrary files on the victim’s system.
Remediation
Update to version 7.5.