Cyber Resilience

CVE-2020-27840

High

Published: 12 May 2021

Published
12 May 2021
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.1022 93.3th percentile
Risk Priority 21 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2020-27840 is a high-severity Out-of-bounds Read (CWE-125) vulnerability in Samba Samba. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 6.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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.…

more

The highest threat from this vulnerability is to system availability.

CWE(s)
CWE-125

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

samba
samba
4.0.0 — 4.12.13 · 4.13.0 — 4.13.6 · 4.14.0 — 4.14.1
debian
debian linux
10.0, 9.0
fedoraproject
fedora
32, 33, 34

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References