Vulnerability · Published Apr 8, 2023 · Assigned by mitre
CVE-2023-24626
Medium 6.5
In plain English
A medium-severity incorrect permission assignment in the screen package (Alpine). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.5%top 54.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | screen | 4.9.0-r3 | ALPINE-CVE-2023-24626 |
| Alpine:v3.21 | screen | 4.9.0-r3 | ALPINE-CVE-2023-24626 |
| Alpine:v3.22 | screen | 4.9.0-r3 | ALPINE-CVE-2023-24626 |
| Alpine:v3.23 | screen | 4.9.0-r3 | ALPINE-CVE-2023-24626 |
| Alpine:v3.24 | screen | 4.9.0-r3 | ALPINE-CVE-2023-24626 |
| Debian:12 | screen | no fix listed | DEBIAN-CVE-2023-24626 |
| Debian:13 | screen | 4.9.1-1 | DEBIAN-CVE-2023-24626 |
| Debian:14 | screen | 4.9.1-1 | DEBIAN-CVE-2023-24626 |
| Ubuntu:22.04:LTS | screen | 4.9.0-1ubuntu0.1 | UBUNTU-CVE-2023-24626 |
| Ubuntu:22.04:LTS | screen | 4.9.0-1ubuntu0.1 | USN-7978-1 |
| Ubuntu:24.04:LTS | screen | 4.9.1-1ubuntu1 | USN-7978-1 |
Affected products (as reported)
Weakness: CWE-732 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H