PT-2021-21870 · Unknown · Covid Certificate Check App+1

Kfmgang · Published 2021-09-27 · Updated 2021-10-07 · CVE-2021-37786

Positive Technologies (AI Summary)

CVSS v3.1

4.6

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: COVID Certificate App IOS versions 2.2.0 and below COVID Certificate Check App IOS versions 2.2.0 and below

Description: The issue is related to improper handling of exceptional conditions in certain Federal Office of Information Technology Systems and Telecommunication FOITT products. This could lead to a denial of service, which can be triggered by scanning a crafted QR code. The denial of service is physically proximate.

Recommendations: For COVID Certificate App IOS versions 2.2.0 and below, a patch is in progress. For COVID Certificate Check App IOS versions 2.2.0 and below, a patch is in progress. As a temporary workaround, consider avoiding the use of the QR code scanning feature in the affected apps until a patch is available.

Exploit

Fix

Improper Handling of Exceptional Conditions

Weakness Enumeration

CWE-755

Related Identifiers

CVE-2021-37786

Affected Products

Covid Certificate App

Covid Certificate Check App

References · 5

• 🔥 https://github.com/admin-ch/CovidCertificate-App-iOS/issues/146 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-37786 · Security Note
• https://osv.dev/vulnerability/CVE-2021-37786 · Vendor Advisory
• https://t.me/cibsecurity/29483 · Telegram Post
• https://t.me/cvenotify/21504 · Telegram Post