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CVE-2018-20684

Status Candidate

Overview

In WinSCP before 5.14 beta, due to missing validation, the scp implementation would accept arbitrary files sent by the server, potentially overwriting unrelated files. This affects TSCPFileSystem::SCPSink in core/ScpFileSystem.cpp.

Related Files

SCP Server Verification Issues
Posted Jan 16, 2019
Authored by Harry Sintonen

Many scp clients fail to verify if the objects returned by the scp server match those it asked for. This issue dates back to 1983 and rcp, on which scp is based. A separate flaw in the client allows the target directory attributes to be changed arbitrarily. Finally, two vulnerabilities in clients may allow server to spoof the client output.

tags | advisory, spoof, vulnerability
advisories | CVE-2000-0992, CVE-2018-20684, CVE-2018-20685, CVE-2019-6109, CVE-2019-6110, CVE-2019-6111
SHA-256 | 7fa072fc8f371c8cc4668eb863810286b6651faaf3b8efdcdeee1bc7d0a40099
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