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OpenSSH 'sftp-server' Security Bypass Vulnerability (Linux)
Information
Severity
Severity
Medium
Family
Family
General
CVSSv2 Base
CVSSv2 Base
5.0
CVSSv2 Vector
CVSSv2 Vector
AV:N/AC:L/Au:N/C:N/I:P/A:N
Solution Type
Solution Type
Vendor Patch
Created
Created
6 years ago
Modified
Modified
4 years ago
Summary
This host is installed with openssh and is prone to security bypass vulnerability.
Insight
Insight
The flaw exists in the 'process_open' function in sftp-server.c script which does not properly prevent write operations in readonly mode.
Affected Software
Affected Software
OpenSSH versions before 7.6 on Linux
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
Upgrade to OpenSSH version 7.6 or later.