Out-of-Bounds Heap Read and Write Vulnerability in Samba vfs_fruit Module

Out-of-Bounds Heap Read and Write Vulnerability in Samba vfs_fruit Module

CVE-2021-44142 · HIGH Severity

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide "...enhanced compatibility with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver." Samba versions prior to 4.13.17, 4.14.12 and 4.15.5 with vfs_fruit configured allow out-of-bounds heap read and write via specially crafted extended file attributes. A remote attacker with write access to extended file attributes can execute arbitrary code with the privileges of smbd, typically root.

Learn more about our Cis Benchmark Audit For Server Software.