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broadcomBroadcom Security ResponseBSNSA23229
HistoryApr 16, 2024 - 12:00 a.m.

Missing character encoding in progress display allows for spoofing of scp client output (CVE-2019-6109)

2024-04-1600:00:00
Broadcom Security Response
support.broadcom.com
3
openssh 7.9
missing character encoding
progress display
spoofing
scp client output
malicious server
crafted object names
manipulate
ansi control codes
additional files
refresh_progress_meter
progressmeter.c
software

6.9 Medium

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

64.0%

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.