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Test ID:1.3.6.1.4.1.25623.1.0.883338
Category:CentOS Local Security Checks
Title:CentOS: Security Advisory for screen (CESA-2021:0742)
Summary:The remote host is missing an update for the 'screen'; package(s) announced via the CESA-2021:0742 advisory.
Description:Summary:
The remote host is missing an update for the 'screen'
package(s) announced via the CESA-2021:0742 advisory.

Vulnerability Insight:
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.

Affected Software/OS:
'screen' package(s) on CentOS 7.

Solution:
Please install the updated package(s).

CVSS Score:
7.5

CVSS Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2021-26937
Debian Security Information: DSA-4861 (Google Search)
https://www.debian.org/security/2021/dsa-4861
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JJWLXP45POUUYBJRRWPVAWNZDJTLYWVM/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GNWBOIDEPOEQS5RMQVMFKHKXJCGNYWBL/
https://security.gentoo.org/glsa/202105-11
https://ftp.gnu.org/gnu/screen/
https://lists.gnu.org/archive/html/screen-devel/2021-02/msg00000.html
https://www.openwall.com/lists/oss-security/2021/02/09/3
https://lists.debian.org/debian-lts-announce/2021/02/msg00031.html
http://www.openwall.com/lists/oss-security/2021/02/09/8
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