Vulnerability Details : CVE-2021-20277

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.
Published 2021-05-12 14:15:11
Updated 2022-08-05 16:01:01
Source Red Hat, Inc.
View at NVD,   CVE.org
Vulnerability category: Memory Corruption

Products affected by CVE-2021-20277

Threat overview for CVE-2021-20277

Top countries where our scanners detected CVE-2021-20277
Top open port discovered on systems with this issue 445
IPs affected by CVE-2021-20277 215,188
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2021-20277!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2021-20277

EPSS FAQ
0.61%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 78 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-20277

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
 MEDIUM AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
 NIST
7.5
 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
 NIST

CWE ids for CVE-2021-20277

  • The product reads data past the end, or before the beginning, of the intended buffer.
    Assigned by: secalert@redhat.com (Secondary)
  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-20277

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