Improper Certificate Validation Affecting nginx-core-debuginfo package, versions <1:1.22.1-1.amzn2023.0.2


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.11% (45th percentile)

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  • Snyk IDSNYK-AMZN2023-NGINXCOREDEBUGINFO-6253300
  • published20 Feb 2024
  • disclosed23 Mar 2022

Introduced: 23 Mar 2022

CVE-2021-3618  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 nginx-core-debuginfo to version 1:1.22.1-1.amzn2023.0.2 or higher.
This issue was patched in ALAS2023-2023-099.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nginx-core-debuginfo package and not the nginx-core-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

ALPACA is an application layer protocol content confusion attack, exploiting TLS servers implementing different protocols but using compatible certificates, such as multi-domain or wildcard certificates. A MiTM attacker having access to victim's traffic at the TCP/IP layer can redirect traffic from one subdomain to another, resulting in a valid TLS session. This breaks the authentication of TLS and cross-protocol attacks may be possible where the behavior of one protocol service may compromise the other at the application layer.

CVSS Scores

version 3.1