openEuler update for zstd

Published: 2021-03-26

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-24032 CVE-2021-24031
CWE-ID	CWE-276
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	openEuler Operating systems & Components / Operating system zstd-help Operating systems & Components / Operating system package or component zstd-devel Operating systems & Components / Operating system package or component zstd-debugsource Operating systems & Components / Operating system package or component zstd-debuginfo Operating systems & Components / Operating system package or component zstd Operating systems & Components / Operating system package or component
Vendor	openEuler

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Incorrect default permissions

EUVDB-ID: #VU51640

Risk: High

CVSSv4.0: 8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-24032

CWE-ID: CWE-276 - Incorrect Default Permissions

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to incorrect default permissions for files and folders that are set by the application within the command-line utility. A remote attacker can view contents of files and directories or modify them.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 20.03 LTS

zstd-help: before 1.4.5-1

zstd-devel: before 1.4.5-1

zstd-debugsource: before 1.4.5-1

zstd-debuginfo: before 1.4.5-1

zstd: before 1.4.5-1

CPE2.3

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1094

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Incorrect default permissions

EUVDB-ID: #VU51639