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Test ID:1.3.6.1.4.1.25623.1.0.147401
Category:General
Title:Samba Symlink Race Vulnerability (CVE-2021-20316)
Summary:Samba is prone to a symlinc race vulnerability which can allow; metadata read and modify outside of the exported share.
Description:Summary:
Samba is prone to a symlinc race vulnerability which can allow
metadata read and modify outside of the exported share.

Vulnerability Insight:
A malicious client can use a symlink race to access or modify
file or directory metadata information outside of the exported share. The user must have
permissions to read or write the metadata on the accessed file or directory.

Affected Software/OS:
Samba prior to version 4.15.0.

Solution:
Update to version 4.15.0 or later.

CVSS Score:
6.6

CVSS Vector:
AV:N/AC:H/Au:S/C:C/I:C/A:N

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2021-20316
https://security.gentoo.org/glsa/202309-06
https://access.redhat.com/security/cve/CVE-2021-20316
https://bugzilla.redhat.com/show_bug.cgi?id=2009673
https://bugzilla.samba.org/show_bug.cgi?id=14842
https://security-tracker.debian.org/tracker/CVE-2021-20316
https://www.samba.org/samba/security/CVE-2021-20316.html
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