CVE-2021-20277
7.5
HIGH
CVSS 3.1
EPSS 4.3%
Description
A flaw was found in Samba's libldb. Multiple, consecutive leading spaces in an LDAP attribute can lead to an out-of-bounds memory write, leading to a crash of the LDAP server process handling the request. The highest threat from this vulnerability is to system availability.
How to fix CVE-2021-20277
To remediate CVE-2021-20277, upgrade the affected package to a fixed version below.
- Alpine/samba—upgrade to 4.12.14-r0 or later
Is CVE-2021-20277 being exploited?
Low — EPSS is 4.3%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 4.0.0, < 4.12.14-r0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |