Vulnerability · Published Mar 6, 2023 · Assigned by redhat
CVE-2021-20251
Medium 5.9
In plain English
A medium-severity race condition in samba. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 55% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.9Medium
Exploit odds (30 days)0.8%top 44.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A flaw was found in samba. A race condition in the password lockout code may lead to the risk of brute force attacks being successful if special conditions are met.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | samba | 2:4.17.2+dfsg-3 | DEBIAN-CVE-2021-20251 |
| Debian:13 | samba | 2:4.17.2+dfsg-3 | DEBIAN-CVE-2021-20251 |
| Debian:14 | samba | 2:4.17.2+dfsg-3 | DEBIAN-CVE-2021-20251 |
| Ubuntu:22.04:LTS | samba | 2:4.15.13+dfsg-0ubuntu1 | USN-5822-1 |
| Ubuntu:22.04:LTS | samba | no fix listed | UBUNTU-CVE-2021-20251 |
Affected products (as reported)
Weakness: CWE-362