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)
EPSS: 0.039 (89.1th percentile) — read the EPSS interpretation.
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.
Affected products
- Samba
- Debian Debian_linux — versions 9.0
- Fedoraproject Fedora — versions 31
- Opensuse Leap — versions 15.1, 15.2
- N/a 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
- secalert@redhat.com (x_refsource_MISC)
- secalert@redhat.com (x_refsource_MISC, Vendor Advisory)
- secalert@redhat.com (x_refsource_FEDORA, vendor-advisory)
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- secalert@redhat.com (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- secalert@redhat.com (mailing-list, x_refsource_MLIST, 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.