Improper input validation in Samba
CVE-2020-25717
A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use this flaw to cause possible privilege escalation.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.016 (76.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
- Samba
- Canonical Ubuntu Linux — versions 18.04, 20.04, 21.04
- Debian Linux — versions 9.0, 10.0
- Fedoraproject Fedora — versions 33, 34, 35
- Red Hat Codeready Linux Builder
- Red Hat Enterprise Linux — versions 7.0, 8.0
- Red Hat Enterprise Linux Desktop — versions 7.0
- Red Hat Enterprise Linux Eus — versions 8.2, 8.4
- Red Hat Enterprise Linux For IBM Z Systems — versions 7.0, 8.0
- Red Hat Enterprise Linux For IBM Z Systems Eus — versions 8.2, 8.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- www.samba.org/samba/security/CVE-2020-25717.html (Mitigation, Vendor Advisory)
- security.gentoo.org/glsa/202309-06 (vendor-advisory)
Frequently asked questions
- What is CVE-2020-25717?
- CVE-2020-25717 is a high-severity vulnerability in Samba, classified under Improper Input Validation. CVSS score: 8.1/10. Published 2022-02-18.
- How severe is CVE-2020-25717?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2020-25717 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.