CVE-2023-39350

Incorrect offset calculation leading to denial of service in FreeRDP

HIGH
7.5
CVSS Score
Published: August 31, 2023 at 07:31 PM UTC
Updated: June 17, 2026 at 06:12 AM UTC
3 products affected across 3 vendorsDebian LinuxFedoraFreeRDP

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Severity
HIGH7.5
Exploit prediction
EPSS 2%

Description

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. This issue affects Clients only. Integer underflow leading to DOS (e.g. abort due to `WINPR_ASSERT` with default compilation flags). When an insufficient blockLen is provided, and proper length validation is not performed, an Integer Underflow occurs, leading to a Denial of Service (DOS) vulnerability. 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.11.0v < 3.0.0-beta33.0.0 beta13.0.0 beta2
Affected range stops below 2.11.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.0.0-beta3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-191

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