CRLF Injection Affecting freerdp-debuginfo package, versions <2:3.6.3-1.amzn2023.0.15


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.4% (33rd percentile)

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  • Snyk IDSNYK-AMZN2023-FREERDPDEBUGINFO-19476015
  • published1 Sept 2026
  • disclosed1 Aug 2026

Introduced: 1 Aug 2026

CVE-2026-67289  (opens in a new tab)
CWE-93  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 freerdp-debuginfo to version 2:3.6.3-1.amzn2023.0.15 or higher.
This issue was patched in ALAS2023-2026-2111.

NVD Description

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

FreeRDP before 3.29.0 (affected versions <= 3.28.0) does not validate CRLF and control characters in the server-controlled RDP redirection TargetNetAddress field. This value is copied into the client's ServerHostname and, when the client connects through an HTTP proxy, is written directly into the proxy CONNECT request line and Host header by http_proxy_connect() without filtering. A malicious or compromised RDP server can send a crafted redirection PDU containing embedded control characters to inject arbitrary headers/requests into the HTTP proxy CONNECT request.

CVSS Base Scores

version 3.1