CVE-2019-6109

NameCVE-2019-6109
DescriptionAn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-1728-1, DSA-4387-1
Debian Bugs793412

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
openssh (PTS)bullseye (security), bullseye1:8.4p1-5+deb11u3fixed
bookworm, bookworm (security)1:9.2p1-2+deb12u3fixed
trixie, sid1:9.9p1-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
opensshsourcejessie1:6.7p1-5+deb8u8DLA-1728-1
opensshsourcestretch1:7.4p1-10+deb9u5DSA-4387-1
opensshsource(unstable)1:7.9p1-6793412

Notes

https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
https://bugzilla.mindrot.org/show_bug.cgi?id=2434
Patch: https://bugzilla.mindrot.org/attachment.cgi?id=3228
Fixed by: https://github.com/openssh/openssh-portable/commit/8976f1c4b2721c26e878151f52bdf346dfe2d54c
possibly additionally needed: https://github.com/openssh/openssh-portable/commit/bdc6c63c80b55bcbaa66b5fde31c1cb1d09a41eb

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