Debian Security Advisory
DSA-4861-1 screen -- security update
- Date Reported:
- 21 Feb 2021
- Affected Packages:
- Security database references:
- In the Debian bugtracking system: Bug 982435.
In Mitre's CVE dictionary: CVE-2021-26937.
- More information:
Felix Weinmann reported a flaw in the handling of combining characters in screen, a terminal multiplexer with VT100/ANSI terminal emulation, which can result in denial of service, or potentially the execution of arbitrary code via a specially crafted UTF-8 character sequence.
For the stable distribution (buster), this problem has been fixed in version 4.6.2-3+deb10u1.
We recommend that you upgrade your screen packages.
For the detailed security status of screen please refer to its security tracker page at: https://security-tracker.debian.org/tracker/screen