Out-of-Bounds Memory Write Vulnerability in Samba's libldb
CVE-2021-20277

7.5HIGH

Key Information:

Vendor

Samba

Status
Samba
Vendor
CVE Published:
12 May 2021

What is CVE-2021-20277?

A flaw in Samba's libldb allows multiple consecutive leading spaces in an LDAP attribute, resulting in an out-of-bounds memory write. This can cause the LDAP server process to crash, significantly impacting system availability and disrupting services reliant on LDAP functionality.

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Deploy the Patch

Affected Version(s)

samba samba 4.14.1, samba 4.13.6, samba 4.12.13

References

https://security.netapp.com/advisory/ntap-20210326-0007/
x_refsource_CONFIRM
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisoryx_refsource_FEDORA
https://lists.debian.org/debian-lts-announce/2021/03/msg0...
mailing-listx_refsource_MLIST

EPSS Score

14% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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