CVE-2023-40186

31.08.2023, 22:15

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an IntegerOverflow leading to Out-Of-Bound Write Vulnerability in the `gdi_CreateSurface` function. This issue affects FreeRDP based clients only. FreeRDP proxies are not affected as image decoding is not done by a proxy. 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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	6.5 MEDIUM	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
GitHub_M	CNA	6.5 MEDIUM	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
CVE	ADP	---				---

Base Score

CVSS 3.x

EPSS Score

Percentile: 29%

Vendor	Product	Version
freerdp	freerdp	𝑥 < 2.11.0
freerdp	freerdp	3.0.0:beta1
freerdp	freerdp	3.0.0:beta2
debian	debian_linux	10.0

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

freerdp2

bullseye	no-dsa
bookworm	no-dsa
sid	2.11.7+dfsg1-6 fixed
trixie	2.11.7+dfsg1-6 fixed

Ubuntu Releases

Ubuntu Product

Codename

freerdp2

mantic	Fixed 2.10.0+dfsg1-1.1ubuntu1 released
lunar	Fixed 2.10.0+dfsg1-1ubuntu0.2 released
jammy	Fixed 2.6.1+dfsg1-3ubuntu2.4 released
focal	Fixed 2.2.0+dfsg1-0ubuntu0.20.04.5 released
bionic	Fixed 2.2.0+dfsg1-0ubuntu0.18.04.4+esm1 released
xenial	ignored
trusty	ignored

Known Exploits!

Common Weakness Enumeration

CWE-190 - Integer Overflow or Wraparound
The software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.

References

https://github.com/FreeRDP/FreeRDP/blob/fee2b10ba1154f952769a53eb608f044782e22f8/libfreerdp/gdi/gfx.c#L1156-L1165

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-hcj4-3c3r-5j3v

https://lists.debian.org/debian-lts-announce/2023/10/msg00008.html

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A6LLDAPEXRDJOM3PREDDD267SSNT77DP/

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IHMTGKCZXJPQOR5ZD2I4GPDNP2DKRXMF/

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OH2ATH2BKDNKCJAU4WPPXK4SHLE3UJUV/