screen security update

2021-04-1413:29:09

CentOS Project

lists.centos.org

162

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.015

Percentile

86.7%

JSON

CentOS Errata and Security Advisory CESA-2021:0742

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.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2021-April/086091.html

Affected packages:
screen

Upstream details at:
https://access.redhat.com/errata/RHSA-2021:0742

OSVersionArchitecturePackageVersionFilename
CentOS7x86_64screen< 4.1.0-0.27.20120314git3c2946.el7_9screen-4.1.0-0.27.20120314git3c2946.el7_9.x86_64.rpm