CVE-2021-20316

moderate-risk
Published 2022-08-23

A flaw was found in the way Samba handled file/directory metadata. This flaw allows an authenticated attacker with permissions to read or modify share metadata, to perform this operation outside of the share.

Do I need to act?

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0.71% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.8/10 Medium
NETWORK / HIGH complexity

Affected Products (8)

Affected Vendors

Debian Redhat Samba

References (12)

Third Party Advisory https://access.redhat.com/security/cve/CVE-2021-20316
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2009673
Issue Tracking https://bugzilla.samba.org/show_bug.cgi?id=14842
Mitigation https://security-tracker.debian.org/tracker/CVE-2021-20316
https://security.gentoo.org/glsa/202309-06
Vendor Advisory https://www.samba.org/samba/security/CVE-2021-20316.html
Third Party Advisory https://access.redhat.com/security/cve/CVE-2021-20316
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2009673
Issue Tracking https://bugzilla.samba.org/show_bug.cgi?id=14842
Mitigation https://security-tracker.debian.org/tracker/CVE-2021-20316
https://security.gentoo.org/glsa/202309-06
Vendor Advisory https://www.samba.org/samba/security/CVE-2021-20316.html
37
/ 100
moderate-risk
Severity 21/34 · High
Exploitability 2/34 · Minimal
Exposure 14/34 · Moderate