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CVE-2021-42257

Date: October 10, 2021

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.

Language: Perl

Severity Score

Related Resources (6)

https://nvd.nist.gov/vuln/detail/CVE-2021-42257
http://www.openwall.com/lists/oss-security/2021/10/14/2
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
https://www.mend.io/vulnerability-database/CVE-2021-42257

Severity Score

Weakness Type (CWE)

Improper Input Validation

CWE-20

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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