Vulnerability in Libsisimai Sisimai

CVE-2022-4891

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.

Vulnerability class: ReDoS (Regular Expression Denial of Service)

EPSS: 0.013 (68.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • cna@vuldb.com (Permissions Required, technical-description, Third Party Advisory, vdb-entry)
  • cna@vuldb.com (signature, Permissions Required, permissions-required, Third Party Advisory)
  • cna@vuldb.com (issue-tracking, Exploit, Patch, Third Party Advisory)
  • cna@vuldb.com (Exploit, Third Party Advisory, exploit)
  • cna@vuldb.com (Patch, Third Party Advisory, patch)
  • cna@vuldb.com (Third Party Advisory, Release Notes, patch)

Frequently asked questions

What is CVE-2022-4891?
CVE-2022-4891 is a low-severity vulnerability in Libsisimai Sisimai, classified under Inefficient Regular Expression Complexity. CVSS score: 3.5/10. Published 2023-01-17.
How severe is CVE-2022-4891?
Low severity. CVSS v3 base score is 3.5 out of 10.
Is CVE-2022-4891 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.