Select your cookie preferences

We use cookies and similar tools to enhance your experience, provide our services, deliver relevant advertising, and make improvements. Approved third parties also use these tools to help us deliver advertising and provide certain site features.

CVE-2021-44141

Public on 2022-02-02
Modified on 2023-11-27
Description

All versions of Samba prior to 4.15.5 are vulnerable to a malicious client using a server symlink to determine if a file or directory exists in an area of the server file system not exported under the share definition. SMB1 with unix extensions has to be enabled in order for this attack to succeed.

A fix for CVE-2021-44141 for will not be provided for Amazon Linux 1 and Amazon Linux 2. You can mitigate this issue by disabling SMBv1.
To do so, add server min protocol = SMB2 to the [global] section of /etc/samba/smb.conf

Severity
Medium
See what this means
CVSS v3 Base Score
4.3
See breakdown
Continue reading

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2023 samba 2023-02-17 20:44 ALAS2023-2023-032

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD CVSSv2 3.5 AV:N/AC:M/Au:S/C:P/I:N/A:N
NVD CVSSv3 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References

Red Hat: CVE-2021-44141 Mitre: CVE-2021-44141 FAQs regarding Amazon Linux ALAS/CVE Severity