CVE-2021-20254

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.

Link	Resource
https://security.netapp.com/advisory/ntap-20210430-0001/	Third Party Advisory
https://www.samba.org/samba/security/CVE-2021-20254.html	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1949442	Issue Tracking Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3EP2VJ73OVBPVSOSTVOMGIEQA3MWF6F7/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZAF6L2M6CNAJ2YYYGXPWETTW5YLCWTVT/	Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202105-22	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/05/msg00023.html	Mailing List Third Party Advisory

Configuration 1

cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

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Published : 2021-05-05 02:15

Updated : 2021-06-24 06:30

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NVD link : CVE-2021-20254

Mitre link : CVE-2021-20254

No products.

CWE-125

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