SMB printer settings don't escape characters in passwords properly

Published 7 y ago 2019-03-15 · modified 4 mo ago 2026-06-17 · JSON

CVSS

6.5

v3.0 · CNA

CISA KEV

not known exploited

EPSS

1.0%

percentile 64%

Public exploits

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 (EPSS)

1.02% probability of exploitation in the next 30 days, higher than 64% of all scored CVEs.

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`
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 · x_refsource_CONFIRM, x_transferred

Sources

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

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