EulerOS 2.0 SP8 : zsh (EulerOS-SA-2020-1831)

High Nessus Plugin ID 139161

Synopsis

The remote EulerOS host is missing a security update.

Description

According to the version of the zsh package installed, the EulerOS installation on the remote host is affected by the following vulnerability :

- In Zsh before 5.8, attackers able to execute commands can regain privileges dropped by the --no-PRIVILEGED option. Zsh fails to overwrite the saved uid, so the original privileges can be restored by executing MODULE_PATH=/dir/with/module zmodload with a module that calls setuid().(CVE-2019-20044)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected zsh package.

See Also

http://www.nessus.org/u?e06ba63b

Plugin Details

Severity: High

ID: 139161

File Name: EulerOS_SA-2020-1831.nasl

Version: 1.2

Type: local

Published: 2020/07/30

Updated: 2020/08/03

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.2

Temporal Score: 5.3

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:zsh, cpe:/o:huawei:euleros:2.0

Required KB Items: Host/local_checks_enabled, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/sp

Excluded KB Items: Host/EulerOS/uvp_version

Exploit Ease: No known exploits are available

Patch Publication Date: 2020/07/30

Reference Information

CVE: CVE-2019-20044