Gentoo Linux Security Advisory 201903-16 - Multiple vulnerabilities have been found in OpenSSH, the worst of which could allow a remote attacker to gain unauthorized access. Versions less than 7.9_p1-r4 are affected.
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SCP clients have an issue where additional files can be copied over without your knowledge.
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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.
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