CVE-2023-39354 — CVE & Security Advisory Radar

🎯 CVE-2023-39354 MEDIUM 5.9 🔥 EPSS 1.3% 🧪 PoC 🇪🇺 EUVD

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CVE-2023-39354 | FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Out-Of-Bounds Read in the `nsc_rle_decompress_data` function. The Out-Of-Bounds Read occurs because it processes `context->Planes` without checking if it contains data of sufficient length. Should an attacker be able to leverage this vulnerability they may be able to cause a crash. This issue has been addressed in vers

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Out-Of-Bounds Read in the `nsc_rle_decompress_data` function. The Out-Of-Bounds Read occurs because it processes `context->Planes` without checking if it contains data of sufficient length. Should an attacker be able to leverage this vulnerability they may be able to cause a crash. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Klassifikation & Betroffenheit:

FreeRDP FreeRDP 3.0.0-beta1, < 3.0.0-beta3FreeRDP < 2.11.0

Improper Control of Generation of Code ('Code Injection') 🎯 Medium

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

🛡️ Empfohlene Mitigation: Refactor your program so that you do not have to dynamically generate code.

Vollständige Definition bei MITRE ➔

⚔️ Typische Angriffsmuster (CAPEC):

CAPEC-35 · Leverage Executable Code in Non-Executab… (Very High) CAPEC-77 · Manipulating User-Controlled Variables (Very High) CAPEC-242 · Code Injection (High)

🎯 ATT&CK-Techniken (Kill-Chain-Verhalten):

T1027.006 · Obfuscated Files or Information: H… T1027.009 · Obfuscated Files or Information: E… T1564.009 · Hide Artifacts: Resource Forking

🧩 Ähnliche Schwachstellen (Hersteller/Klasse/Score-Band):

CVE-2022-24883 7.4 CVE-2023-40187 7.3 CVE-2026-55192 7.2 CVE-2026-63652 7.1 CVE-2026-33987 7.1

🩹 Patch verfügbar (OSV):

🩹 1384b3c33b9bd7599633cc54bf20cf20ec6be83c (Commit) 🩹 cd1da25a87358eb3b5512fd259310e95b19a05ec (Commit)

📚 Referenzen & Quellen:

🇪🇺 Original-Eintrag (ENISA EUVD) 🇺🇸 NVD-Eintrag

Ausnutzungs-Zeitleiste:

Reserviert 2023

Veröffentlicht 08/2023

Heute 07.09.

CVSS-Vektor-Analyse: 5.9

AV · Angriffsvektor Netzwerk

AC · Komplexität Hoch

PR · Privilegien Keine

UI · Interaktion Keine

S · Scope Unverändert

C · Vertraulichkeit Keine

I · Integrität Keine

A · Verfügbarkeit Hoch

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Veröffentlicht:31.08.2023

Aktualisiert:03.11.2025 20:35

Assigner (CNA):GitHub_M

EUVD-ID:EUVD-2023-43080

CWE-94: Code Injection ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Sicherheits-Update des Herstellers zeitnah einspielen und Netzwerksegmentierung prüfen.

Tier	2026-08-29	2026-09-06
≥90 %	4	0
≥50 %	4	0
≥10 %	3	0
<10 %	304	300

5.9 MEDIUM

🇪🇺 EUVD

EPSS

1.3%

CVE-2023-39354 🌐 Netzwerk (Remote) 🔓 Keine Authentifizierung nötig

🧪 FreeRDP

CVE-2023-39354 | FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Out-Of-Bounds Read in the `nsc_rle_decompress_data` function. The Out-Of-Bounds Read occurs because it processes `context->Planes` without checking if it contains data of sufficient length. Should an attacker be able to leverage this vulnerability they may be able to cause a crash. This issue has been addressed in vers

CWE-94: Code Injection ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Sicherheits-Update des Herstellers zeitnah einspielen und Netzwerksegmentierung prüfen.

31.08.2023

🛡️ Details ➔

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