NULL pointer dereference in Samba
CVE-2020-14323
A null pointer dereference flaw was found in samba's Winbind service in versions before 4.11.15, before 4.12.9 and before 4.13.1. A local user could use this flaw to crash the winbind service causing denial of service.
EPSS: 0.006 (46.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Samba
- Debian Debian_linux — versions 9.0
- Fedoraproject Fedora — versions 32, 33
- Opensuse Leap — versions 15.1, 15.2
- N/a Samba — versions All samba versions before 4.11.15, before 4.12.9 and before 4.13.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Vendor Advisory)
- secalert@redhat.com (vendor-advisory, Third Party Advisory)
- secalert@redhat.com (vendor-advisory, Third Party Advisory)
- secalert@redhat.com (vendor-advisory)
- secalert@redhat.com (Third Party Advisory)
- secalert@redhat.com (vendor-advisory)
- secalert@redhat.com (mailing-list, Mailing List, Third Party Advisory)
- secalert@redhat.com (vendor-advisory, Third Party Advisory)
- secalert@redhat.com (mailing-list)
Frequently asked questions
- What is CVE-2020-14323?
- CVE-2020-14323 is a medium-severity vulnerability in Samba, classified under Improper Null Termination. CVSS score: 5.5/10. Published 2020-10-29.
- How severe is CVE-2020-14323?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2020-14323 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.