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CVE-2022-4891

Date: January 17, 2023

A vulnerability has been found in Sisimai up to 4.25.14p11 and classified as problematic. This vulnerability affects the function to_plain of the file lib/sisimai/string.rb. The manipulation leads to inefficient regular expression complexity. The exploit has been disclosed to the public and may be used. Upgrading to version 4.25.14p12 is able to address this issue. The name of the patch is 51fe2e6521c9c02b421b383943dc9e4bbbe65d4e. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-218452.

Language: Ruby

Severity Score

Related Resources (10)

https://gist.githubusercontent.com/gmcabrita/e5dc0332473fc2e3a7a407434c8d21c7/raw/00b12035e5e1b685469f143b94301a50306376ba/example.html
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/sisimai/CVE-2022-4891.yml
https://github.com/sisimai/rb-sisimai/commit/51fe2e6521c9c02b421b383943dc9e4bbbe65d4e
https://vuldb.com/?ctiid.218452
https://github.com/sisimai/rb-sisimai/pull/244
https://github.com/sisimai/rb-sisimai/releases/tag/v4.25.14p12
https://github.com/sisimai/rb-sisimai
https://nvd.nist.gov/vuln/detail/CVE-2022-4891
https://vuldb.com/?id.218452
https://www.mend.io/vulnerability-database/CVE-2022-4891

Severity Score

Weakness Type (CWE)

Inefficient Regular Expression Complexity

CWE-1333

CVSS v3.1

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

CVSS v2

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

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