SB2019011021 - Input validation error in winscp.sourceforge.net WinSCP
Published: January 10, 2019 Updated: January 11, 2019
Security Bulletin ID
SB2019011021
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2018-20684)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to bypass security restrictions.
The vulnerability exists in TSCPFileSystem::SCPSink in core/ScpFileSystem.cpp due to insufficient validation of user-supplied input. A remote attacker can send arbitrary files via the server and potentially overwrite unrelated files.
Remediation
Install update from vendor's website.