This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2021-44142 →
DEBIAN-CVE-2021-44142
The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide "...enhanced compatibility with Apple SMB clients and interoperability...
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Debian:12
samba
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:4.16.0+dfsg-2"}]}]
Debian:13
samba
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:4.16.0+dfsg-2"}]}]
Debian:14
samba
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:4.16.0+dfsg-2"}]}]
References
- advisory security-tracker.debian.org