CVE-2021-24032

low-risk
Published 2021-03-04

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.

Do I need to act?

-
0.02% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.7/10 Medium
LOCAL / HIGH complexity

Affected Products (1)

Zstandard

Affected Vendors

Facebook

References (6)

Patch https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=982519
Issue Tracking https://github.com/facebook/zstd/issues/2491
Third Party Advisory https://www.facebook.com/security/advisories/cve-2021-24032
Patch https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=982519
Issue Tracking https://github.com/facebook/zstd/issues/2491
Third Party Advisory https://www.facebook.com/security/advisories/cve-2021-24032
17
/ 100
low-risk
Severity 12/34 · Low
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal