CVE Tools
Sign in

CVE-2021-20316

Published: Aug 23, 2022Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-362
6.8MEDIUM
NVD MITRE
EPSS Score
0.8%
Top 47.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:LUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-362

Affected Products

redhat
commercial·USaka red hat
virtualization hostOn-prem
Operating Systems / linux-distro
enterprise linux eusOn-premOS
Operating Systems / linux-distro
enterprise linux ausOn-prem
Operating Systems / linux-distro
enterprise linux tusOn-prem
Operating Systems / linux-distro
samba
oss-project·DE
sambaLibraryLibrary
Operating Systems / unix-bsd
debian
oss-project·GBaka debian gnu/linux
debian linuxOn-premOS
Operating Systems / linux-distro
Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
Astra Linux Special EditionOn-premOS
Operating Systems / linux-distro
АО «ИВК»
commercial·RUaka ivk
Альт 8 СПOn-premOS
Operating Systems / linux-distro
and 4 more affected products View all →

Exploitability

Official Patch Available
Workaround Available
Is your org exposed to CVE-2021-20316?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://bugzilla.samba.org/show_bug.cgi?id=14842
bugzilla.samba.org
https://www.samba.org/samba/security/CVE-2021-20316.html
samba.org
https://bugzilla.redhat.com/show_bug.cgi?id=2009673
bugzilla.redhat.com
and 12 more references View all →

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2021-20316 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows