CVE-2021-20316

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Summary

CVECVE-2021-20316
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-08-23 16:15:00 UTC
Updated2023-09-17 09:15:00 UTC
DescriptionA 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.

Risk And Classification

Problem Types: CWE-362

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 10.0 All All All
Operating System Debian Debian Linux 11.0 All All All
Operating System Redhat Enterprise Linux 8.0 All All All
Operating System Redhat Enterprise Linux Aus 8.6 All All All
Operating System Redhat Enterprise Linux Eus 8.6 All All All
Operating System Redhat Enterprise Linux Tus 8.6 All All All
Application Redhat Virtualization Host 4.0 All All All
Application Samba Samba All All All All

References

ReferenceSourceLinkTags
Samba: Multiple Vulnerabilities (GLSA 202309-06) — Gentoo security GENTOO security.gentoo.org
2009673 – (CVE-2021-20316) CVE-2021-20316 samba: Symlink race error can allow metadata read and modify outside of the exported share MISC bugzilla.redhat.com
14842 – CVE-2021-20316 [SECURITY] Fileserver symlink metadata share escape. MISC bugzilla.samba.org
Red Hat Customer Portal - Access to 24x7 support and knowledge MISC access.redhat.com
Samba - Security Announcement Archive MISC www.samba.org
CVE-2021-20316 MISC security-tracker.debian.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159828 Oracle Enterprise Linux Security Update for samba (ELSA-2022-2074)
  • 184137 Debian Security Update for samba (CVE-2021-20316)
  • 240286 Red Hat Update for samba security (RHSA-2022:1756)
  • 240314 Red Hat Update for samba security (RHSA-2022:2074)
  • 354310 Amazon Linux Security Advisory for samba : ALAS2022-2022-022
  • 354496 Amazon Linux Security Advisory for samba : ALAS2022-2022-224
  • 354550 Amazon Linux Security Advisory for samba : ALAS-2022-224
  • 710751 Gentoo Linux Samba Multiple Vulnerabilities (GLSA 202309-06)
  • 751680 OpenSUSE Security Update for samba (openSUSE-SU-2022:0283-1)
  • 751683 SUSE Enterprise Linux Security Update for samba (SUSE-SU-2022:0323-1)
  • 751994 SUSE Enterprise Linux Security Update for samba (SUSE-SU-2022:0283-1)
  • 903884 Common Base Linux Mariner (CBL-Mariner) Security Update for samba (10652)
  • 940520 AlmaLinux Security Update for samba (ALSA-2022:2074)
  • 960130 Rocky Linux Security Update for samba (RLSA-2022:2074)
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