Vulnerability CVE-2021-42257
Published: 2021-10-11

Description:
check_smart before 6.9.1 allows unintended drive access by an unprivileged user because it only checks for a substring match of a device path (the /dev/bus substring and a number), aka an unanchored regular expression.

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:L/AC:L/Au:N/C:N/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
3.6/10
4.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
Partial
Affected software
Check smart project -> Check smart 

 References:
https://www.claudiokuenzler.com/monitoring-plugins/check_smart.php
https://bugzilla.suse.com/show_bug.cgi?id=1183057
https://www.claudiokuenzler.com/blog/1068/check_smart-6.9.1-security-fix-release-pseudo-device-path
http://www.openwall.com/lists/oss-security/2021/10/14/2
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