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.
Published 2021-05-12 15:15:08
Updated 2021-05-26 19:46:22
Source Red Hat, Inc.
View at NVD,   CVE.org

Threat overview for CVE-2020-27840

Top countries where our scanners detected CVE-2020-27840
Top open port discovered on systems with this issue 445
IPs affected by CVE-2020-27840 148,864
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2020-27840!
*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-2020-27840

0.65%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 77 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-27840

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-2020-27840

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

References for CVE-2020-27840

Products affected by CVE-2020-27840

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