Information disclosure in Samba
CVE-2021-44141
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.
Vulnerability class: Information Disclosure
EPSS: 0.011 (61.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Samba
- Fedoraproject Fedora — versions 34, 35
- Redhat Storage — versions 3.0
- N/a Samba — versions All versions of Samba prior to 4.15.5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Mitigation, Vendor Advisory)
- secalert@redhat.com (vendor-advisory)
Frequently asked questions
- What is CVE-2021-44141?
- CVE-2021-44141 is a medium-severity vulnerability in Samba, classified under Information Disclosure. CVSS score: 4.3/10. Published 2022-02-21.
- How severe is CVE-2021-44141?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2021-44141 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.