Out-of-bounds Read Affecting samba-krb5-printing package, versions <0:4.13.3-5.el8_4
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Test your applications- Snyk ID SNYK-CENTOS8-SAMBAKRB5PRINTING-2125398
- published 26 Jul 2021
- disclosed 29 Apr 2021
Introduced: 29 Apr 2021
CVE-2021-20254 Open this link in a new tabHow to fix?
Upgrade Centos:8 samba-krb5-printing to version 0:4.13.3-5.el8_4 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream samba-krb5-printing package and not the samba-krb5-printing package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
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.
References
- https://access.redhat.com/security/cve/CVE-2021-20254
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3EP2VJ73OVBPVSOSTVOMGIEQA3MWF6F7/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZAF6L2M6CNAJ2YYYGXPWETTW5YLCWTVT/
- https://security.gentoo.org/glsa/202105-22
- https://bugzilla.redhat.com/show_bug.cgi?id=1949442
- https://security.netapp.com/advisory/ntap-20210430-0001/
- https://www.samba.org/samba/security/CVE-2021-20254.html
- https://lists.debian.org/debian-lts-announce/2021/05/msg00023.html
- https://access.redhat.com/errata/RHSA-2021:4058
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3EP2VJ73OVBPVSOSTVOMGIEQA3MWF6F7/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZAF6L2M6CNAJ2YYYGXPWETTW5YLCWTVT/