FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

xrdp -- Local users can perform a buffer overflow attack against the xrdp-sesman service and then inpersonate it

Affected packages
xrdp < 0.9.13.1,1

Details

VuXML ID 2675f0db-baa5-11ea-aa12-80ee73419af3
Discovery 2020-06-02
Entry 2020-06-30

Ashley Newson reports:

The xrdp-sesman service can be crashed by connecting over port 3350 and supplying a malicious payload. Once the xrdp-sesman process is dead, an unprivileged attacker on the server could then proceed to start their own imposter sesman service listening on port 3350.

References

CVE Name CVE-2020-4044
URL https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-4044
URL https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-j9fv-6fwf-p3g4