Description
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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| SUSE | yast2-auth-client | ≤ 5.0.4 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | yast2-auth-client | 4.7.1-150700.3.9.1 | SUSE-SU-2026:3914-1 |
| SLES 15 SP6 | yast2-auth-client | 4.6.3-150600.3.12.1 | SUSE-SU-2026:3901-1 |
| SLES 15 SP5 | yast2-auth-client | 4.5.5-150500.3.9.1 | SUSE-SU-2026:3895-1 |
| SLES 15 SP4 | yast2-auth-client | 4.4.6-150400.3.19.1 | SUSE-SU-2026:3894-1 |
| SLES 12 SP5 | yast2-auth-client | 3.3.22-3.15.1 | SUSE-SU-2026:3893-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP6 | yast2-auth-client | 4.6.3-150600.3.12.1 | SUSE-SU-2026:3901-1 |
| SLES for SAP 15 SP5 | yast2-auth-client | 4.5.5-150500.3.9.1 | SUSE-SU-2026:3895-1 |
| SLES for SAP 15 SP4 | yast2-auth-client | 4.4.6-150400.3.19.1 | SUSE-SU-2026:3894-1 |
| SLE HPC 15 SP5 | yast2-auth-client | 4.5.5-150500.3.9.1 | SUSE-SU-2026:3895-1 |
| SLE HPC 15 SP4 | yast2-auth-client | 4.4.6-150400.3.19.1 | SUSE-SU-2026:3894-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | yast2-auth-client | 5.0.5-1.1 | openSUSE-SU-2026:11938-1 |
Advisories 6
- openSUSE-SU-2026:11938-1 yast2-auth-client-5.0.5-1.1 on GA media SUSE / openSUSE Security Updates · Oct 1, 2026
- SUSE-SU-2026:3901-1 Security update for yast2-auth-client SUSE / openSUSE Security Updates · Sep 10, 2026
- SUSE-SU-2026:3893-1 Security update for yast2-auth-client SUSE / openSUSE Security Updates · Sep 10, 2026
- SUSE-SU-2026:3894-1 Security update for yast2-auth-client SUSE / openSUSE Security Updates · Sep 10, 2026
- SUSE-SU-2026:3895-1 Security update for yast2-auth-client SUSE / openSUSE Security Updates · Sep 10, 2026
- SUSE-SU-2026:3914-1 Security update for yast2-auth-client SUSE / openSUSE Security Updates · Sep 10, 2026
References
- https://bugzilla.suse.com/show_bug.cgi?id=1272775 issue-tracking