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
We recommend that you upgrade your screen packages.
For the detailed security status of screen please refer to its security
tracker page at:
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: [email protected]
Debian Security Advisory DSA-4861-1 [email protected]
https://www.debian.org/security/ Salvatore Bonaccorso
February 21, 2021 https://www.debian.org/security/faq