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CVE-2021-31799

Good to know:

Date: July 28, 2021

In RDoc 3.11 through 6.x before 6.3.1, as distributed with Ruby through 3.0.1, it is possible to execute arbitrary code via | and tags in a filename.

Language: Ruby

Severity Score

7.0

Related Resources (15)

Url: https://www.ruby-lang.org/en/news/2021/05/02/os-command-injection-in-rdoc/

Url: https://security-tracker.debian.org/tracker/CVE-2021-31799

Url: https://security.gentoo.org/glsa/202401-05

Url: https://security.netapp.com/advisory/ntap-20210902-0004/

Url: https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rdoc/CVE-2021-31799.yml

Url: https://lists.debian.org/debian-lts-announce/2021/10/msg00009.html

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-31799

Url: https://access.redhat.com/security/cve/CVE-2021-31799

Url: https://github.com/ruby/rdoc/commit/a7f5d6ab88632b3b482fe10611382ff73d14eed7

Url: https://security.netapp.com/advisory/ntap-20210902-0004

Url: https://www.oracle.com/security-alerts/cpuapr2022.html

Url: https://security.alpinelinux.org/vuln/CVE-2021-31799

Url: https://www.ruby-lang.org/en/news/2021/05/02/os-command-injection-in-rdoc

Url: https://github.com/ruby/rdoc

Url: https://www.mend.io/vulnerability-database/CVE-2021-31799

Severity Score

7.0

Weakness Type (CWE)

Improper Neutralization of Special Elements used in a Command ('Command Injection')

CWE-77

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-74

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CWE-78

Top Fix

Upgrade Version

Upgrade to version rdoc - 6.1.2.1;rdoc - 6.3.1

CVSS v3.1

Base Score:	7.0
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	HIGH
Privileges Required (PR):	LOW
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	4.4
Access Vector (AV):	LOCAL
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	PARTIAL
Availability (A):	PARTIAL
Additional information:

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