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Privilege escalation on xrdp-sesman

High
metalefty published GHSA-8h98-h426-xf32 Feb 7, 2022

Package

xrdp (none)

Affected versions

0.9.18, 0.9.17

Patched versions

>= 0.9.18.1

Description

Reported by Gilad Kleinman.

An integer underflow leading to a heap overflow in the sesman server allows any unauthenticated attacker which is accessible to a sesman server (listens by default on localhost when installing xrdp, but can be remote if configured otherwise) to execute code as root.

Impact

Root code execution on any sesman server accessible.

Patches

Patched in versions 0.9.18.1 or 0.9.19 and above

Workarounds

None

Severity

High
7.8
/ 10

CVSS base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE ID

CVE-2022-23613

Credits