SMB printer settings don't escape characters in passwords properly

published 2019-03-15 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-12676

cvss: 6.5; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits: 0; none known

In yast2-printer up to and including version 4.0.2 the SMB printer settings don't escape characters in passwords properly. If a password with backticks or simliar characters is supplied this allows for executing code as root. This requires tricking root to enter such a password in yast.

Exploit prediction

1.02% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.0	6.5	CVSS:3.0/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
NVD	3.0	8.1	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	9.3	AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

SUSE yast2-printer

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command
CWE-20 Improper Input Validation

References

bugzilla.suse.com /show_bug.cgi?id=1114853

Sources

CVE List CVE-2018-20106
NVD CVE-2018-20106

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary