Executive Summary

Summary
Title Zsh: Privilege escalation
Informations
Name GLSA-202003-55 First vendor Publication 2020-03-25
Vendor Gentoo Last vendor Modification 2020-03-25
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 7.8
Base Score 7.8 Environmental Score 7.8
impact SubScore 5.9 Temporal Score 7.8
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 7.2 Attack Range Local
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

A vulnerability in Zsh might allow an attacker to escalate privileges.

Background

A shell designed for interactive use, although it is also a powerful scripting language.

Description

It was discovered that Zsh was insecure dropping privileges when unsetting PRIVILEGED option.

Impact

An attacker could escalate privileges.

Workaround

There is no known workaround at this time.

Resolution

All Zsh users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-shells/zsh-5.8"

References

[ 1 ] CVE-2019-20044 : https://nvd.nist.gov/vuln/detail/CVE-2019-20044

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

https://security.gentoo.org/glsa/202003-55

Original Source

Url : http://security.gentoo.org/glsa/glsa-202003-55.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-273 Improper Check for Dropped Privileges

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 186

Alert History

If you want to see full details history, please login or register.
0
1
Date Informations
2020-05-23 13:03:43
  • Multiple Updates
2020-03-26 00:17:52
  • First insertion