Packages
- screen - terminal multiplexer with VT100/ANSI terminal emulation
Details
It was discovered that GNU Screen was not properly checking user
identifiers before sending certain signals to target processes. If GNU
Screen was installed as setuid or setgid, a local attacker could possibly
use this issue to cause a denial of service on a target application.
It was discovered that GNU Screen was not properly checking user
identifiers before sending certain signals to target processes. If GNU
Screen was installed as setuid or setgid, a local attacker could possibly
use this issue to cause a denial of service on a target application.
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 18.04 bionic | screen – 4.6.2-1ubuntu1.1+esm1 | ||
| 16.04 xenial | screen – 4.3.1-2ubuntu0.1+esm1 | ||
| 14.04 trusty | screen – 4.1.0~20120320gitdb59704-9ubuntu0.1~esm3 | ||
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