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Status published
High
CVE-2020-27840
A flaw was found in samba. Spaces used in a...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://security.netapp.com/advisory/ntap-20210326-0007/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X5J3B6PN5XMXF3OHYBNHDKZ3XFSUGY4L/
- https://lists.debian.org/debian-lts-announce/2021/03/msg00036.html
- https://www.debian.org/security/2021/dsa-4884
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZXP3ONIY6MB4C5LDZV4YL5KJCES3UX24/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VLZ74IF2N75VQSIHBL4B3P5WKWQCXSRY/
- https://bugzilla.redhat.com/show_bug.cgi?id=1941400
- https://www.samba.org/samba/security/CVE-2020-27840.html
- https://security.gentoo.org/glsa/202105-22
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Affected Vendor
Affected Software
samba
Vulnerable Versions:
samba 4.14.1, samba 4.13.6, samba 4.12.13
Timeline
Official Publish:
May 12th, 2021
Last Modified:
August 4th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H