Out-of-bounds Read in Freerdp

CVE-2023-40576

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 `RleDecompress` function. This Out-Of-Bounds Read occurs because FreeRDP processes the `pbSrcBuffer` variable without checking if it contains data of sufficient length. Insufficient data in the `pbSrcBuffer` variable may cause errors or crashes. This issue has been addressed in version 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this issue.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.012 (67.9th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-40576: held from 0.010 to 0.012.

EPSS over last 30 days · oldest: 0.010 · newest: 0.012 · change: +0.002

Affected products

  • Freerdp — versions 3.0.0, >= 3.0.0-beta1, < 3.0.0-beta3

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-40576?
CVE-2023-40576 is a medium-severity vulnerability in Freerdp, classified under Out-of-bounds Read. CVSS score: 5.3/10. Published 2023-08-31.
How severe is CVE-2023-40576?
Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2023-40576 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.