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Red Hat: CVE-2021-20254: Moderate: samba security and bug fix update (RHSA-2021:2313)

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Red Hat: CVE-2021-20254: Moderate: samba security and bug fix update (RHSA-2021:2313)

Severity
5
CVSS
(AV:N/AC:M/Au:S/C:P/I:P/A:N)
Published
05/05/2021
Created
06/11/2021
Added
06/09/2021
Modified
06/28/2021

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)

  • redhat-upgrade-libsmbclient
  • redhat-upgrade-libsmbclient-devel
  • redhat-upgrade-libwbclient
  • redhat-upgrade-libwbclient-devel
  • redhat-upgrade-samba
  • redhat-upgrade-samba-client
  • redhat-upgrade-samba-client-libs
  • redhat-upgrade-samba-common
  • redhat-upgrade-samba-common-libs
  • redhat-upgrade-samba-common-tools
  • redhat-upgrade-samba-dc
  • redhat-upgrade-samba-dc-libs
  • redhat-upgrade-samba-debuginfo
  • redhat-upgrade-samba-devel
  • redhat-upgrade-samba-krb5-printing
  • redhat-upgrade-samba-libs
  • redhat-upgrade-samba-pidl
  • redhat-upgrade-samba-python
  • redhat-upgrade-samba-python-test
  • redhat-upgrade-samba-test
  • redhat-upgrade-samba-test-libs
  • redhat-upgrade-samba-vfs-glusterfs
  • redhat-upgrade-samba-winbind
  • redhat-upgrade-samba-winbind-clients
  • redhat-upgrade-samba-winbind-krb5-locator
  • redhat-upgrade-samba-winbind-modules

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