An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client output, e.g., by using ANSI control codes to hide additional files being transferred. This affects refresh_progress_meter() in progressmeter.c.
https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c
https://cvsweb.openbsd.org/src/usr.bin/ssh/progressmeter.c
https://usn.ubuntu.com/3885-1/
https://www.debian.org/security/2019/dsa-4387
https://security.netapp.com/advisory/ntap-20190213-0001/
https://security.gentoo.org/glsa/201903-16
https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00058.html
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
https://access.redhat.com/errata/RHSA-2019:3702
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
Source: MITRE
Published: 2019-01-31
Updated: 2023-02-23
Type: CWE-116
Base Score: 4
Vector: AV:N/AC:H/Au:N/C:P/I:P/A:N
Impact Score: 4.9
Exploitability Score: 4.9
Severity: MEDIUM
Base Score: 6.8
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Impact Score: 5.2
Exploitability Score: 1.6
Severity: MEDIUM