ALPINE-CVE-2021-20277

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2021-20277
Published: 12 May 2021, 14:15
Last modified:08 Jul 2026, 04:30

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
3.1 (osv_alpine)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

12 May 2021, 14:15
Published
Vulnerability first disclosed
08 Jul 2026, 04:30
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Systems

  • alpine•samba

    < 4.12.14-r0 | < 4.13.7-r0 | < 4.14.2-r0 | < 4.14.2-r0 | < 4.14.2-r0 | < 4.14.2-r0 | < 4.14.2-r0 | < 4.14.2-r0 | < 4.14.2-r0 | < 4.14.2-r0 | < 4.14.2-r0 | < 4.14.2-r0 | < 4.14.2-r0 | ≥ 4.0.0, < 4.12.14-r0 | ≥ 4.0.0, < 4.13.7-r0 | ≥ 4.0.0, < 4.14.2-r0 | ≥ 4.0.0, < 4.14.2-r0 | ≥ 4.0.0, < 4.14.2-r0 | ≥ 4.0.0, < 4.14.2-r0 | ≥ 4.0.0, < 4.14.2-r0 | ≥ 4.0.0, < 4.14.2-r0 | ≥ 4.0.0, < 4.14.2-r0 | ≥ 4.0.0, < 4.14.2-r0 | ≥ 4.0.0, < 4.14.2-r0 | ≥ 4.0.0, < 4.14.2-r0 | ≥ 4.0.0, < 4.14.2-r0

References (1)