CVE-2023-39355 FreeRDP Use-After-Free in RDPGFX_CMDID_RESETGRAPHICS
A use-after-free vulnerability in FreeRDP allows attackers to cause a denial of service via crafted RDPGFX packets.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-39355?
CVE-2023-39355 is a high-severity use after free vulnerability in Debian Debian Linux, published on 31 Aug 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-416
Which versions are affected by CVE-2023-39355?
It affects 2 products.
Products include Debian Debian Linux, Freerdp Freerdp.
How do I fix CVE-2023-39355?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2023-39355 being exploited?
There is no known exploitation of CVE-2023-39355 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as GHSA-hvwj-vmg6-2f5h.