CVE-2023-24626

low-risk
Published 2023-04-08

socket.c in GNU Screen through 4.9.0, when installed setuid or setgid (the default on platforms such as Arch Linux and FreeBSD), allows local users to send a privileged SIGHUP signal to any PID, causing a denial of service or disruption of the target process.

Do I need to act?

-
0.07% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
!
1 public exploit available
51252
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Screen

Affected Vendors

Gnu

References (8)

Mailing List https://git.savannah.gnu.org/cgit/screen.git/patch/?id=e9ad41bfedb4537a6f0de20f0...
Permissions Required https://savannah.gnu.org/bugs/?63195
Third Party Advisory https://www.exploit-db.com/exploits/51252
Mailing List https://git.savannah.gnu.org/cgit/screen.git/patch/?id=e9ad41bfedb4537a6f0de20f0...
Permissions Required https://savannah.gnu.org/bugs/?63195
https://security.netapp.com/advisory/ntap-20250509-0003/
Third Party Advisory https://www.exploit-db.com/exploits/51252
Third Party Advisory https://www.exploit-db.com/exploits/51252
26
/ 100
low-risk
Severity 21/34 · High
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal