Use After Free in Freerdp
CVE-2023-39355
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Versions of FreeRDP on the 3.x release branch before beta3 are subject to a Use-After-Free in processing `RDPGFX_CMDID_RESETGRAPHICS` packets. If `context->maxPlaneSize` is 0, `context->planesBuffer` will be freed. However, without updating `context->planesBuffer`, this leads to a Use-After-Free exploit vector. In most environments this should only result in a crash. This issue has been addressed in version 3.0.0-beta3 and users of the beta 3.x releases are advised to upgrade. There are no known workarounds for this vulnerability.
Vulnerability class: Use-After-Free
EPSS: 0.011 (61.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H.
Affected products
- Freerdp — versions 3.0.0, >= 3.0.0-beta1, < 3.0.0-beta3
- Debian Debian_linux — versions 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Mailing List, Third Party Advisory)
- security-advisories@github.com
Frequently asked questions
- What is CVE-2023-39355?
- CVE-2023-39355 is a high-severity vulnerability in Freerdp, classified under Use After Free. CVSS score: 7.0/10. Published 2023-08-31.
- How severe is CVE-2023-39355?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2023-39355 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.