CVE-2023-4091

Public on 2023-10-11
Modified on 2024-01-30
Description

SMB client can truncate files to 0 bytes by opening files with OVERWRITE disposition when using the acl_xattr Samba VFS module with the smb.conf setting "acl_xattr:ignore system acls = yes"

Severity
Medium
See what this means
CVSS v3 Base Score
6.5
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 samba 2023-12-05 ALAS-2023-1896
Amazon Linux 2 - Core samba 2023-12-04 ALAS2-2023-2367
Amazon Linux 2023 samba 2023-11-03 ALAS2023-2023-416

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
NVD CVSSv3 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

References

FAQs regarding Amazon Linux ALAS/CVE Severity Red Hat: CVE-2023-4091 Mitre: CVE-2023-4091