Vulnerability Details : CVE-2021-20316
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.
Products affected by CVE-2021-20316
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_aus:8.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_tus:8.6:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
Threat overview for CVE-2021-20316
Top countries where our scanners detected CVE-2021-20316
Top open port discovered on systems with this issue
80
IPs affected by CVE-2021-20316 175,538
Threat actors abusing to this issue?
Yes
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affected by CVE-2021-20316!
*Directly or indirectly through your vendors, service providers and 3rd parties.
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attack surface intelligence
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Exploit prediction scoring system (EPSS) score for CVE-2021-20316
0.41%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 60 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-20316
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N |
1.6
|
5.2
|
NIST |
CWE ids for CVE-2021-20316
-
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
References for CVE-2021-20316
-
https://security-tracker.debian.org/tracker/CVE-2021-20316
CVE-2021-20316Mitigation;Third Party Advisory
-
https://www.samba.org/samba/security/CVE-2021-20316.html
Vendor Advisory
-
https://bugzilla.samba.org/show_bug.cgi?id=14842
Issue Tracking;Vendor Advisory
-
https://access.redhat.com/security/cve/CVE-2021-20316
CVE-2021-20316- Red Hat Customer PortalThird Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=2009673
2009673 – (CVE-2021-20316) CVE-2021-20316 samba: Symlink race error can allow metadata read and modify outside of the exported shareIssue Tracking;Third Party Advisory
-
https://security.gentoo.org/glsa/202309-06
Samba: Multiple Vulnerabilities (GLSA 202309-06) — Gentoo security
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