CVE-2021-44142
samba - security update
8.8
HIGH
CVSS 3.1
EPSS 35.7%
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.
How to fix CVE-2021-44142
To remediate CVE-2021-44142, upgrade the affected package to a fixed version below.
- —upgrade to 4.13.17-r0 or later
- —upgrade to 2:4.13.13+dfsg-1~deb11u3 or later
- —upgrade to 2:4.9.5+dfsg-5+deb10u3 or later
Is CVE-2021-44142 being exploited?
Moderate — EPSS is 35.7%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (3)
- from 0, < 4.13.17-r0
- from 0, < 2:4.13.13+dfsg-1~deb11u3
- from 0, < 2:4.9.5+dfsg-5+deb10u3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |