Ubuntu update for screen
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2023-24626 |
| CWE-ID | CWE-276 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Ubuntu Operating systems & Components / Operating system screen (Ubuntu package) Operating systems & Components / Operating system package or component |
| Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Incorrect default permissions
EUVDB-ID: #VU77905
Risk: Low
CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-24626
CWE-ID:
CWE-276 - Incorrect Default Permissions
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to missing permissions checks in socket.c, which allows a local user to send a privileged SIGHUP signal to any PID, causing a denial of service or disruption of the target process.
MitigationUpdate the affected package screen to the latest version.
Vulnerable software versionsUbuntu: 14.04 - 18.04
screen (Ubuntu package): before Ubuntu Pro
External linkshttp://ubuntu.com/security/notices/USN-6198-1
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.
