CVSS 3.1
8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2021-44142
High (8.8). EPSS 74% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 74% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-125, CWE-787
- Published
- Modified
- Record from
- the NVD, synced
Affected
- canonical:ubuntu_linux
- debian:debian_linux
- fedoraproject:fedora
- redhat:codeready_linux_builder
- redhat:enterprise_linux
- redhat:enterprise_linux_desktop
- redhat:enterprise_linux_eus
- redhat:enterprise_linux_for_ibm_z_systems
- redhat:enterprise_linux_for_ibm_z_systems_eus
- redhat:enterprise_linux_for_power_big_endian
- redhat:enterprise_linux_for_power_little_endian
- redhat:enterprise_linux_for_power_little_endian_eus
- redhat:enterprise_linux_for_scientific_computing
- redhat:enterprise_linux_resilient_storage
- redhat:enterprise_linux_server
- redhat:enterprise_linux_server_aus
- redhat:enterprise_linux_server_tus
- redhat:enterprise_linux_server_update_services_for_sap_solutions
- redhat:enterprise_linux_workstation
- redhat:gluster_storage
- redhat:virtualization_host
- samba:samba
- synology:diskstation_manager
References
- https://bugzilla.samba.org/show_bug.cgi?id=14914
- https://kb.cert.org/vuls/id/119678
- https://security.gentoo.org/glsa/202309-06
- https://www.samba.org/samba/security/CVE-2021-44142.html
- https://www.zerodayinitiative.com/blog/2022/2/1/cve-2021-44142-details-on-a-samba-code-execution-bug-demonstrated-at-pwn2own-austin