PT-2021-17308 · Cira · Cira Canadian Shield

David Coomber · Published 2021-02-22 · Updated 2021-02-26 · CVE-2021-27189

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions: CIRA Canadian Shield versions prior to 4.0.13

Description: The issue is related to a lack of SSL Certificate Validation in the CIRA Canadian Shield app. This could potentially allow for man-in-the-middle (MITM) attacks.

Recommendations: For versions prior to 4.0.13, update to version 4.0.13 or later to resolve the issue. As a temporary workaround, consider restricting the use of the app until the update is applied.

Fix

Improper Certificate Validation

Weakness Enumeration

CWE-295

Related Identifiers

CVE-2021-27189

Affected Products

Cira Canadian Shield

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2021-27189 · Security Note
• https://osv.dev/vulnerability/CVE-2021-27189 · Vendor Advisory
• https://info-sec.ca/advisories/CIRA-Canadian-Shield.html · Patch
• https://t.me/cibsecurity/23967 · Telegram Post
• http://seclists.org/fulldisclosure/2021/Feb/72 · Note
• http://packetstormsecurity.com/files/161507/CIRA-Canadian-Shield-Man-In-The-Middle.html · Note
• https://t.me/cvenotify/10365 · Telegram Post
• https://t.me/defcon_news/69635 · Telegram Post