Resource exhaustion in Samba
CVE-2020-10745
A flaw was found in all Samba versions before 4.10.17, before 4.11.11 and before 4.12.4 in the way it processed NetBios over TCP/IP. This flaw allows a remote attacker could to cause the Samba server to consume excessive CPU use, resulting in a denial of service. This highest threat from this vulnerability is to system availability.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.039 (89.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.039 · newest: 0.039 · change: 0.000
Affected products
- Samba
- Debian Linux — versions 9.0
- Fedoraproject Fedora — versions 31
- openSUSE Leap — versions 15.1, 15.2
- Samba — versions All Samba versions before 4.10.17, before 4.11.11 and before 4.12.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi
- www.samba.org/samba/security/CVE-2020-10745.html (Vendor Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00030.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00054.html (vendor-advisory, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/202007-15 (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-09/msg00002.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/11/msg00041.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-10745?
- CVE-2020-10745 is a high-severity vulnerability in Samba, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2020-07-07.
- How severe is CVE-2020-10745?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-10745 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.