Security restrictions bypass in X.org Server - CVE-2020-25697

Vulnerability identifier: #VU48239

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-25697

CWE-ID: CWE-264

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to the way X.org server handles authentication requests. A local user can impersonate the X.org server and trick the victim into providing credentials to a rouge application under attackers control.

X.org Server
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Software Development Kit 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
Basesystem Module
openSUSE Leap
xtrans

Install update from vendor's website.

X.org Server - update to 1.20.10
xtrans - addressed in versions 1.3.5-5.3.1, 1.3.5-150000.3.3.1

• http://seclists.org/oss-sec/2020/q4/105

• Privilege escalation in X.org server
• SUSE update for xtrans
• SUSE update for xtrans