CVE-2021-20251 Race condition in samba

What is CVE-2021-20251?

CVE-2021-20251 is a medium-severity vulnerability in Fedoraproject Fedora, published on 6 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

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.

Weakness: CWE-362

Which versions are affected by CVE-2021-20251?

It affects 2 products.

Products include Fedoraproject Fedora, Samba Samba.

How do I fix CVE-2021-20251?

Apply the vendor's patch.

Is CVE-2021-20251 being exploited?

There is no known exploitation of CVE-2021-20251 in the wild and no public exploit code.

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All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-27917, AZL-36998, CLSA-2026-1779354406, CLSA-2026-1779354817, CLSA-2026-1779365436, DEBIAN-CVE-2021-20251 and 4 more.