Multiple vulnerabilities in X.Org Server
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2020-14345 CVE-2020-14346 CVE-2020-14361 CVE-2020-14362 |
| CWE-ID | CWE-125 CWE-191 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
X.org Server Server applications / Other server solutions |
| Vendor | X.org |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Out-of-bounds read
EUVDB-ID: #VU46028
Risk: Low
CVSSv3.1: 2.5 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-14345
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in XkbSetNames(). A local user can run a specially crafted program to trigger out-of-bounds read error and read contents of memory on the system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsX.org Server: 1.20.0 - 1.20.8
External linkshttp://seclists.org/oss-sec/2020/q3/136
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) Integer underflow
EUVDB-ID: #VU46029
Risk: Low
CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-14346
CWE-ID:
CWE-191 - Integer underflow
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to integer underflow in the XIChangeHierarchy(). A local user can send a specially crafted request to the affected application, trigger integer underflow and execute arbitrary code on the target system with elevated privileges.
Install updates from vendor's website.
Vulnerable software versionsX.org Server: 1.20.0 - 1.20.8
External linkshttp://seclists.org/oss-sec/2020/q3/136
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.
3) Integer underflow
EUVDB-ID: #VU46030
Risk: Low
CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-14361
CWE-ID:
CWE-191 - Integer underflow
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to integer underflow in the XkbSelectEvents(). A local user can send a specially crafted request to the affected application, trigger integer underflow and execute arbitrary code on the target system with elevated privileges.
MitigationInstall updates from vendor's website.
Vulnerable software versionsX.org Server: 1.20.0 - 1.20.8
External linkshttp://seclists.org/oss-sec/2020/q3/136
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.
4) Integer underflow
EUVDB-ID: #VU46031
Risk: Low
CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-14362
CWE-ID:
CWE-191 - Integer underflow
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to integer underflow in the XRecordRegisterClients(). A local user can send a specially crafted request to the affected application, trigger integer underflow and execute arbitrary code on the target system with elevated privileges.
MitigationInstall updates from vendor's website.
Vulnerable software versionsX.org Server: 1.20.0 - 1.20.8
External linkshttp://seclists.org/oss-sec/2020/q3/136
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.
