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Status published
High
CVE-2021-20277
A flaw was found in Samba's libldb. Multiple, consecutive leading...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
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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=1941402
- https://www.samba.org/samba/security/CVE-2021-20277.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 3rd, 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