vulnerability
CentOS Linux: CVE-2021-20254: Moderate: samba security and bug fix update (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:M/Au:S/C:P/I:P/A:N) | 05/05/2021 | 06/09/2021 | 05/25/2023 |
Severity
5
CVSS
(AV:N/AC:M/Au:S/C:P/I:P/A:N)
Published
05/05/2021
Added
06/09/2021
Modified
05/25/2023
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)
centos-upgrade-ctdbcentos-upgrade-ctdb-debuginfocentos-upgrade-ctdb-testscentos-upgrade-ctdb-tests-debuginfocentos-upgrade-libsmbclientcentos-upgrade-libsmbclient-debuginfocentos-upgrade-libsmbclient-develcentos-upgrade-libwbclientcentos-upgrade-libwbclient-debuginfocentos-upgrade-libwbclient-develcentos-upgrade-python3-sambacentos-upgrade-python3-samba-debuginfocentos-upgrade-python3-samba-testcentos-upgrade-sambacentos-upgrade-samba-clientcentos-upgrade-samba-client-debuginfocentos-upgrade-samba-client-libscentos-upgrade-samba-client-libs-debuginfocentos-upgrade-samba-commoncentos-upgrade-samba-common-libscentos-upgrade-samba-common-libs-debuginfocentos-upgrade-samba-common-toolscentos-upgrade-samba-common-tools-debuginfocentos-upgrade-samba-dccentos-upgrade-samba-dc-libscentos-upgrade-samba-debuginfocentos-upgrade-samba-debugsourcecentos-upgrade-samba-develcentos-upgrade-samba-krb5-printingcentos-upgrade-samba-krb5-printing-debuginfocentos-upgrade-samba-libscentos-upgrade-samba-libs-debuginfocentos-upgrade-samba-pidlcentos-upgrade-samba-pythoncentos-upgrade-samba-python-testcentos-upgrade-samba-testcentos-upgrade-samba-test-debuginfocentos-upgrade-samba-test-libscentos-upgrade-samba-test-libs-debuginfocentos-upgrade-samba-vfs-glusterfscentos-upgrade-samba-vfs-glusterfs-debuginfocentos-upgrade-samba-winbindcentos-upgrade-samba-winbind-clientscentos-upgrade-samba-winbind-clients-debuginfocentos-upgrade-samba-winbind-debuginfocentos-upgrade-samba-winbind-krb5-locatorcentos-upgrade-samba-winbind-krb5-locator-debuginfocentos-upgrade-samba-winbind-modulescentos-upgrade-samba-winbind-modules-debuginfocentos-upgrade-samba-winexecentos-upgrade-samba-winexe-debuginfo
References
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