CVE-2023-40181

Publication date 31 August 2023

Last updated 26 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

9.1 · Critical

Score breakdown

Description

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Integer-Underflow leading to Out-Of-Bound Read in the `zgfx_decompress_segment` function. In the context of `CopyMemory`, it's possible to read data beyond the transmitted packet range and likely 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 issue.

Status

Package Ubuntu Release Status
freerdp2 23.10 mantic
Fixed 2.10.0+dfsg1-1.1ubuntu1
23.04 lunar
Fixed 2.10.0+dfsg1-1ubuntu0.2
22.04 LTS jammy
Fixed 2.6.1+dfsg1-3ubuntu2.4
20.04 LTS focal
Fixed 2.2.0+dfsg1-0ubuntu0.20.04.5
18.04 LTS bionic
Fixed 2.2.0+dfsg1-0ubuntu0.18.04.4+esm1
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release

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Severity score breakdown

CVSS version: CVSS v3.0

Base score 9.1 · Critical

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

References

Related Ubuntu Security Notices (USN)

    • USN-6401-1
    • FreeRDP vulnerabilities
    • 4 October 2023

Other references

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