CVE-2021-24032

Publication date 20 February 2021

Last updated 18 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

4.7 · Medium

Score breakdown

Description

Beginning in v1.4.1 and prior to v1.4.9, due to an incomplete fix for CVE-2021-24031, the Zstandard command-line utility created output files with default permissions and restricted those permissions immediately afterwards. Output files could therefore momentarily be readable or writable to unintended parties.

Status

Package Ubuntu Release Status
libzstd 25.04 plucky
Fixed 1.4.8+dfsg-2build1
24.10 oracular
Fixed 1.4.8+dfsg-2build1
24.04 LTS noble
Fixed 1.4.8+dfsg-2build1
23.10 mantic
Fixed 1.4.8+dfsg-2build1
23.04 lunar
Fixed 1.4.8+dfsg-2build1
22.10 kinetic
Fixed 1.4.8+dfsg-2build1
22.04 LTS jammy
Fixed 1.4.8+dfsg-2build1
21.10 impish
Fixed 1.4.8+dfsg-2build1
21.04 hirsute
Fixed 1.4.8+dfsg-2build1
20.10 groovy
Fixed 1.4.5+dfsg-4ubuntu0.1
20.04 LTS focal
Fixed 1.4.4+dfsg-3ubuntu0.1
18.04 LTS bionic
Fixed 1.3.3+dfsg-2ubuntu1.2
16.04 LTS xenial
Fixed 1.3.1+dfsg-1~ubuntu0.16.04.1+esm3
14.04 LTS trusty Not in release

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
libzstd

Severity score breakdown

Parameter Value
Base score 4.7 · Medium
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-5720-1
    • Zstandard vulnerabilities
    • 9 November 2022

Other references