SUSE update for xorg-x11-server
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2021-4009 CVE-2021-4011 |
| CWE-ID | CWE-787 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software |
SUSE Linux Enterprise Server for SAP Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing Operating systems & Components / Operating system SUSE Linux Enterprise Server Operating systems & Components / Operating system xorg-x11-server-sdk Operating systems & Components / Operating system package or component xorg-x11-server-extra-debuginfo Operating systems & Components / Operating system package or component xorg-x11-server-extra Operating systems & Components / Operating system package or component xorg-x11-server-debugsource Operating systems & Components / Operating system package or component xorg-x11-server-debuginfo Operating systems & Components / Operating system package or component xorg-x11-server Operating systems & Components / Operating system package or component |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Out-of-bounds write
EUVDB-ID: #VU59046
Risk: Low
CVSSv4.0: 7.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear]
CVE-ID: CVE-2021-4009
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in the ProcXFixesCreatePointerBarrier() function in the XFixes extension. A local user can send a specially crafted CreatePointerBarrier request, trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
Update the affected package xorg-x11-server to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Server for SAP: 15
SUSE Linux Enterprise High Performance Computing: 15-ESPOS - 15-LTSS
SUSE Linux Enterprise Server: 15-LTSS
xorg-x11-server-sdk: before 1.19.6-8.36.1
xorg-x11-server-extra-debuginfo: before 1.19.6-8.36.1
xorg-x11-server-extra: before 1.19.6-8.36.1
xorg-x11-server-debugsource: before 1.19.6-8.36.1
xorg-x11-server-debuginfo: before 1.19.6-8.36.1
xorg-x11-server: before 1.19.6-8.36.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap:15:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing:15-ESPOS:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing:15-LTSS:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server:15-LTSS:*:*:*:*:*:*:*
- cpe:2.3:a:suse:xorg-x11-server-sdk:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:xorg-x11-server-extra-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:xorg-x11-server-extra:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:xorg-x11-server-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:xorg-x11-server-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:xorg-x11-server:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-20214121-1/
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Out-of-bounds write
EUVDB-ID: #VU59048
Risk: Low
CVSSv4.0: 7.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear]
CVE-ID: CVE-2021-4011
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in the SwapCreateRegister() function in the Record extension. A local user can send a specially crafted RecordCreateContext and RecordRegisterClients requests, trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
Update the affected package xorg-x11-server to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Server for SAP: 15
SUSE Linux Enterprise High Performance Computing: 15-ESPOS - 15-LTSS
SUSE Linux Enterprise Server: 15-LTSS
xorg-x11-server-sdk: before 1.19.6-8.36.1
xorg-x11-server-extra-debuginfo: before 1.19.6-8.36.1
xorg-x11-server-extra: before 1.19.6-8.36.1
xorg-x11-server-debugsource: before 1.19.6-8.36.1
xorg-x11-server-debuginfo: before 1.19.6-8.36.1
xorg-x11-server: before 1.19.6-8.36.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap:15:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing:15-ESPOS:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing:15-LTSS:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server:15-LTSS:*:*:*:*:*:*:*
- cpe:2.3:a:suse:xorg-x11-server-sdk:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:xorg-x11-server-extra-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:xorg-x11-server-extra:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:xorg-x11-server-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:xorg-x11-server-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:xorg-x11-server:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-20214121-1/
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
