PT-2021-23785 · Jetbrains · Jetbrains Ktor

Ole Schilling Tjensvold · Published 2021-11-09 · Updated 2021-11-10 · CVE-2021-43203

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions JetBrains Ktor versions prior to 1.6.4

Description The issue is related to improper nonce verification during the OAuth2 authentication process.

Recommendations For versions prior to 1.6.4, update to version 1.6.4 or later to resolve the issue.

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2021-43203

Affected Products

Jetbrains Ktor

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2021-43203 · Security Note
• https://osv.dev/vulnerability/CVE-2021-43203 · Vendor Advisory
• https://blog.jetbrains.com/blog/2021/11/08/jetbrains-security-bulletin-q3-2021 · Vendor Advisory
• https://t.me/cibsecurity/32072 · Telegram Post