CVE-2021-44142
High
Description
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.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Samba
PublishedFeb 21, 2022
First seenFeb 21, 2022
Weakness typeCWE-125Out-of-bounds readCWE-787Out-of-bounds write
How to fix
Update
- samba samba4.13.17, 4.14.12, 4.15.5 or later
- synology diskstation_manager6.2.4-25556.4 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| samba samba | v < 4.13.17, 4.14.0 ≤ v < 4.14.12, 4.15.0 ≤ v < 4.15.5 | 4.13.17, 4.14.12, 4.15.5 |
| debian debian_linux | 10.0, 11.0 | — |
| canonical ubuntu_linux | 14.04, 16.04, 18.04, 20.04, 21.10 | — |
| synology diskstation_manager | 6.2 ≤ v < 6.2.4-25556.4 | 6.2.4-25556.4 |
| fedoraproject fedora | 34, 35 | — |
| redhat codeready_linux_builder | No range specified | — |
| redhat gluster_storage | 3.5 | — |
| redhat virtualization_host | 4.0 | — |
| redhat enterprise_linux | 7.0, 8.0 | — |
| redhat enterprise_linux_desktop | 7.0 | — |
| redhat enterprise_linux_eus | 8.2, 8.4 | — |
| redhat enterprise_linux_for_ibm_z_systems | 7.0, 8.0 | — |
| redhat enterprise_linux_for_ibm_z_systems_eus | 8.2, 8.4 | — |
| redhat enterprise_linux_for_power_big_endian | 7.0 | — |
| redhat enterprise_linux_for_power_little_endian | 7.0, 8.0 | — |
| redhat enterprise_linux_for_power_little_endian_eus | 8.2, 8.4 | — |
| redhat enterprise_linux_for_scientific_computing | 7.0 | — |
| redhat enterprise_linux_resilient_storage | 7.0 | — |
| redhat enterprise_linux_server | 7.0, 8.1 | — |
| redhat enterprise_linux_server_aus | 8.2, 8.4 | — |
| redhat enterprise_linux_server_tus | 8.2, 8.4 | — |
| redhat enterprise_linux_server_update_services_for_sap_solutions | 8.1, 8.2, 8.4 | — |
| redhat enterprise_linux_workstation | 7.0 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.