zsh security update

2020-03-2518:56:53

CentOS Project

lists.centos.org

7.2 High

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.0005 Low

EPSS

Percentile

17.0%

JSON

CentOS Errata and Security Advisory CESA-2020:0853

The zsh shell is a command interpreter usable as an interactive login shell and as a shell script command processor. Zsh resembles the ksh shell (the Korn shell), but includes many enhancements. Zsh supports command-line editing, built-in spelling correction, programmable command completion, shell functions (with autoloading), a history mechanism, and more.

Security Fix(es):

zsh: insecure dropping of privileges when unsetting PRIVILEGED option (CVE-2019-20044)

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/2020-March/085789.html

Affected packages:
zsh
zsh-html

Upstream details at:
https://access.redhat.com/errata/RHSA-2020:0853

OSVersionArchitecturePackageVersionFilename
CentOS7x86_64zsh< 5.0.2-34.el7_7.2zsh-5.0.2-34.el7_7.2.x86_64.rpm
CentOS7x86_64zsh-html< 5.0.2-34.el7_7.2zsh-html-5.0.2-34.el7_7.2.x86_64.rpm