Description
FreeRDP is a free implementation of the Remote Desktop Protocol. FreeRDP based clients that use a version of FreeRDP prior to 3.5.0 or 2.11.6 and have connections to servers using the `NSC` codec are vulnerable to integer underflow. Versions 3.5.0 and 2.11.6 patch the issue. As a workaround, do not use the NSC codec (e.g. use `-nsc`).
References (9)
Core 9
Core References
Third Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/5JL476WVJSIE7SBUKVJRVA6A52V2HOLZ/
Third Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/7SIS6NUNLUBOV4CPCSWKDE6T6C2W3WTR/
Third Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/PX3U6YPZQ7PEJBVKSBUOLWVH7DHROHY5/
Third Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/ZKI4UISUXYNBPN4K6TIQKDRTIJ6CDCKJ/
Mitigation, Vendor Advisory x_refsource_confirm
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-23c5-cp23-h2h5
Issue Tracking x_refsource_misc
https://github.com/FreeRDP/FreeRDP/pull/10077
Release Notes x_refsource_misc
https://github.com/FreeRDP/FreeRDP/releases/tag/2.11.6
Release Notes x_refsource_misc
https://github.com/FreeRDP/FreeRDP/releases/tag/3.5.0
Scores
CVSS v3
8.1
EPSS
0.0192
EPSS Percentile
77.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-191
Status
published
Products (4)
fedoraproject/fedora
38
fedoraproject/fedora
39
fedoraproject/fedora
40
freerdp/freerdp
< 2.11.6
Published
Apr 22, 2024
Tracked Since
Feb 18, 2026