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vulnerabilityCVE-2025-61984
Name
CVE-2025-61984
Source
NVD ( link)Debian ( link)
Description
ssh in OpenSSH before 10.1 allows control characters in usernames that originate from certain possibly untrusted sources, potentially leading to code execution when a ProxyCommand is used. The untrusted sources are the command line and %-sequence expansion of a configuration file. (A configuration file that provides a complete literal username is not categorized as an untrusted source.)
Published Date
Updated Date
Workaround
-
Advisories

Analysis#


Affected Component
Analysis
openssh
Patched

Vulnerability Ratings#


3.6
CVSSv31
NaN
other

Others affected components#


Name
Project
Project Version
Version
Status
buildroot
master
10.3p1
Not Affected
openwrt
master
10.3_p1-r2
Not Affected
openwrt
openwrt-25.12
10.3_p1-r1
Not Affected
yocto
kirkstone
8.9p1
Patched
yocto
master
10.3p1
Not Affected
yocto
scarthgap
9.6p1
Patched

Resolved with patches#


openssh (buildroot:2025.02.x)

#
Title
Author
Resolve
1
Add more username validity checks
"djm@openbsd.org" <djm@openbsd.org>
CVE-2025-61984
2
Refuse usernames that include control characters
"djm@openbsd.org" <djm@openbsd.org>
CVE-2025-61984

openssh (yocto:kirkstone)

#
Title
Author
Resolve
1
upstream: Improve rules for %-expansion of username.
"djm@openbsd.org" <djm@openbsd.org>
CVE-2025-61984

openssh (yocto:scarthgap)

#
Title
Author
Resolve
1
upstream: Improve rules for %-expansion of username.
"djm@openbsd.org" <djm@openbsd.org>
CVE-2025-61984