A screen security update has been released for Red Hat Enterprise Linux 7.
RHSA-2021:0742-01: Important: screen security update
=====================================================================
Red Hat Security Advisory
Synopsis: Important: screen security update
Advisory ID: RHSA-2021:0742-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0742
Issue date: 2021-03-08
CVE Names: CVE-2021-26937
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1. Summary:
An update for screen is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
3. Description:
The screen utility allows users to have multiple logins on a single
terminal.
Security Fix(es):
* screen: crash when processing combining chars (CVE-2021-26937)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.
4. Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
5. Bugs fixed ( https://bugzilla.redhat.com/):
1927062 - CVE-2021-26937 screen: crash when processing combining chars
6. Package List:
Red Hat Enterprise Linux Client Optional (v. 7):
Source:
screen-4.1.0-0.27.20120314git3c2946.el7_9.src.rpm
x86_64:
screen-4.1.0-0.27.20120314git3c2946.el7_9.x86_64.rpm
screen-debuginfo-4.1.0-0.27.20120314git3c2946.el7_9.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source:
screen-4.1.0-0.27.20120314git3c2946.el7_9.src.rpm
x86_64:
screen-4.1.0-0.27.20120314git3c2946.el7_9.x86_64.rpm
screen-debuginfo-4.1.0-0.27.20120314git3c2946.el7_9.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source:
screen-4.1.0-0.27.20120314git3c2946.el7_9.src.rpm
ppc64:
screen-4.1.0-0.27.20120314git3c2946.el7_9.ppc64.rpm
screen-debuginfo-4.1.0-0.27.20120314git3c2946.el7_9.ppc64.rpm
ppc64le:
screen-4.1.0-0.27.20120314git3c2946.el7_9.ppc64le.rpm
screen-debuginfo-4.1.0-0.27.20120314git3c2946.el7_9.ppc64le.rpm
s390x:
screen-4.1.0-0.27.20120314git3c2946.el7_9.s390x.rpm
screen-debuginfo-4.1.0-0.27.20120314git3c2946.el7_9.s390x.rpm
x86_64:
screen-4.1.0-0.27.20120314git3c2946.el7_9.x86_64.rpm
screen-debuginfo-4.1.0-0.27.20120314git3c2946.el7_9.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source:
screen-4.1.0-0.27.20120314git3c2946.el7_9.src.rpm
x86_64:
screen-4.1.0-0.27.20120314git3c2946.el7_9.x86_64.rpm
screen-debuginfo-4.1.0-0.27.20120314git3c2946.el7_9.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2021-26937
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2021 Red Hat, Inc.
