Rapid7 Vulnerability & Exploit Database

Rocky Linux: CVE-2021-20254: Moderate: samba security update (RLSA-2021-4058)

Back to Search

Rocky Linux: CVE-2021-20254: Moderate: samba security update (RLSA-2021-4058)

Severity
5
CVSS
(AV:N/AC:M/Au:S/C:P/I:P/A:N)
Published
05/05/2021
Created
05/06/2022
Added
05/05/2022
Modified
05/05/2022

Description

A flaw was found in samba. The Samba smbd file server must map Windows group identities (SIDs) into unix group ids (gids). The code that performs this had a flaw that could allow it to read data beyond the end of the array in the case where a negative cache entry had been added to the mapping cache. This could cause the calling code to return those values into the process token that stores the group membership for a user. The highest threat from this vulnerability is to data confidentiality and integrity.

Solution(s)

  • rocky-upgrade-ctdb
  • rocky-upgrade-ctdb-debuginfo
  • rocky-upgrade-ctdb-tests
  • rocky-upgrade-ctdb-tests-debuginfo
  • rocky-upgrade-libsmbclient
  • rocky-upgrade-libsmbclient-debuginfo
  • rocky-upgrade-libsmbclient-devel
  • rocky-upgrade-libwbclient
  • rocky-upgrade-libwbclient-debuginfo
  • rocky-upgrade-libwbclient-devel
  • rocky-upgrade-python3-samba
  • rocky-upgrade-python3-samba-debuginfo
  • rocky-upgrade-python3-samba-devel
  • rocky-upgrade-python3-samba-test
  • rocky-upgrade-samba
  • rocky-upgrade-samba-client
  • rocky-upgrade-samba-client-debuginfo
  • rocky-upgrade-samba-client-libs
  • rocky-upgrade-samba-client-libs-debuginfo
  • rocky-upgrade-samba-common
  • rocky-upgrade-samba-common-libs
  • rocky-upgrade-samba-common-libs-debuginfo
  • rocky-upgrade-samba-common-tools
  • rocky-upgrade-samba-common-tools-debuginfo
  • rocky-upgrade-samba-debuginfo
  • rocky-upgrade-samba-debugsource
  • rocky-upgrade-samba-devel
  • rocky-upgrade-samba-krb5-printing
  • rocky-upgrade-samba-krb5-printing-debuginfo
  • rocky-upgrade-samba-libs
  • rocky-upgrade-samba-libs-debuginfo
  • rocky-upgrade-samba-pidl
  • rocky-upgrade-samba-test
  • rocky-upgrade-samba-test-debuginfo
  • rocky-upgrade-samba-test-libs
  • rocky-upgrade-samba-test-libs-debuginfo
  • rocky-upgrade-samba-vfs-glusterfs
  • rocky-upgrade-samba-vfs-glusterfs-debuginfo
  • rocky-upgrade-samba-winbind
  • rocky-upgrade-samba-winbind-clients
  • rocky-upgrade-samba-winbind-clients-debuginfo
  • rocky-upgrade-samba-winbind-debuginfo
  • rocky-upgrade-samba-winbind-krb5-locator
  • rocky-upgrade-samba-winbind-krb5-locator-debuginfo
  • rocky-upgrade-samba-winbind-modules
  • rocky-upgrade-samba-winbind-modules-debuginfo
  • rocky-upgrade-samba-winexe
  • rocky-upgrade-samba-winexe-debuginfo

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;