Debian update for xorg-server
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-3472 |
| CWE-ID | CWE-191 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
xorg-server (Debian package) Operating systems & Components / Operating system package or component |
| Vendor | Debian |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Integer underflow
EUVDB-ID: #VU52197
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-2021-3472
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 within the XChangeFeedbackControl() function. A local user can run a specially crafted program to trigger integer underflow and escalate privileges on the system.
Update xorg-server package to version 2:1.20.4-1+deb10u3.
Vulnerable software versionsxorg-server (Debian package): 1.20.4-1+deb10u1 - 2:1.20.10-1
External linkshttp://www.debian.org/security/2021/dsa-4893
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.
