CVE-2020-14323: debian debian_linux Improper Null Termination
Vulnerability summary
CVE-2020-14323 is a medium (CVSS 5.5) Improper Null Termination vulnerability in debian debian_linux. EPSS estimates a 0.62% chance of exploitation in the next 30 days, higher than 49.8% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 21 · Related 14Timeline
- 29-10-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
6 scores · 5 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.62%
Chance of exploitation in the next 30 days
Percentile
50%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.62% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian2 products
- samba< 2:4.13.2+dfsg-2
- debian_linuxEOL9.0
Alpine1 product
- samba≥ 3.6.0, < 4.11.16-r0 | ≥ 3.6.0, < 4.12.9-r0
Fedoraproject1 product
- fedoraEOL32 | 33
Opensuse1 product
- leapEOL15.1 | 15.2
Samba1 product
- samba≥ 3.6.0, < 4.11.15 | ≥ 4.12.0, < 4.12.9 | ≥ 4.13.0, < 4.13.1
Ubuntu1 product
- samba< 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11 | < 2:4.3.11+dfsg-0ubuntu0.16.04.32 | < 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | < 2:4.11.6+dfsg-0ubuntu1.6
6 vendors · 7 products
References
17 links- lists.opensuse.org/opensuse-security-announce/2020-11/msg00008.htmlVendor AdvisoryThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-11/msg00012.htmlVendor AdvisoryThird Party Advisory
- lists.fedoraproject.org/archives/…Vendor Advisory
- security.netapp.com/advisory/ntap-20201103-0001/Third Party Advisory
- lists.fedoraproject.org/archives/…Vendor Advisory
