CVE-2026-59681 — yast2-auth-client: OS command injection via unsanitized Organizational Unit / dnsHostName in AD join

Description (CNA)

A OS command injection vulnerability in yast2-auth-client allows an attacker who controls Active Directory configuration values to execute arbitrary commands as root on the configured host. Auth::AuthConf in src/lib/auth/authconf.rb assembles the Samba net ads join, net ads lookup -S and net ads testjoin invocations by interpolating configuration values into a single command string and passing that string to Open3.popen2 / Open3.capture2, which causes Ruby to run it through /bin/sh. The Organizational Unit (ou), dnshostname, AD user name and AD domain name values are neither validated nor shell-quoted.

Affected (CNA)

Vendor / product	Versions
SUSE / yast2-auth-client	affected 0 through 5.0.4

CWE

CWE-78

References

https://bugzilla.suse.com/show_bug.cgi?id=1272775

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.