Snyk has a published code exploit for this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applicationsUpgrade Ubuntu:18.04
screen
to version 4.6.2-1ubuntu1.1+esm1 or higher.
Note: Versions mentioned in the description apply only to the upstream screen
package and not the screen
package as distributed by Ubuntu
.
See How to fix?
for Ubuntu:18.04
relevant fixed versions and status.
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.