CVE-2020-15778

Name	CVE-2020-15778
Description	DISPUTED scp in OpenSSH through 8.3p1 allows command injection in the scp.c toremote function, as demonstrated by backtick characters in the destination argument. NOTE: the vendor reportedly has stated that they intentionally omit validation of "anomalous argument transfers" because that could "stand a great chance of breaking existing workflows."
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severity	medium

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
openssh (PTS)	stretch	1:7.4p1-10+deb9u7	vulnerable
	stretch (security)	1:7.4p1-10+deb9u6	vulnerable
	buster	1:7.9p1-10+deb10u2	vulnerable
	buster (security)	1:7.9p1-10+deb10u1	vulnerable
	bullseye, sid	1:8.4p1-5	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
openssh	source	(unstable)	(unfixed)	unimportant

Notes

https://bugzilla.redhat.com/show_bug.cgi?id=1860487
https://github.com/cpandya2909/CVE-2020-15778
Negligible security impact, changing the scp protocol can have a good chance
of breaking existing workflows.