ALPINE-CVE-2020-27840

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2020-27840
Published: 12 May 2021, 15:15
Last modified:08 Jul 2026, 04:31

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, 15:15
Published
Vulnerability first disclosed
08 Jul 2026, 04:31
Last Modified
Vulnerability information updated

Description

A flaw was found in samba. Spaces used in a string around a domain name (DN), while supposed to be ignored, can cause invalid DN strings with spaces to instead write a zero-byte into out-of-bounds memory, resulting in a crash. 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)