CVE-2020-27840

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2020-27840
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.

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References
Link Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1941400 Issue Tracking Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00036.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VLZ74IF2N75VQSIHBL4B3P5WKWQCXSRY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X5J3B6PN5XMXF3OHYBNHDKZ3XFSUGY4L/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZXP3ONIY6MB4C5LDZV4YL5KJCES3UX24/
https://security.gentoo.org/glsa/202105-22 Third Party Advisory
https://security.netapp.com/advisory/ntap-20210326-0007/ Third Party Advisory
https://www.debian.org/security/2021/dsa-4884 Third Party Advisory
https://www.samba.org/samba/security/CVE-2020-27840.html Vendor Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Configuration 3 (hide)

OR cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
History

26 May 2021, 19:46

Type Values Removed Values Added
References (GENTOO) https://security.gentoo.org/glsa/202105-22 - (GENTOO) https://security.gentoo.org/glsa/202105-22 - Third Party Advisory

26 May 2021, 12:15

Type Values Removed Values Added
References
  • (GENTOO) https://security.gentoo.org/glsa/202105-22 -

21 May 2021, 18:32

Type Values Removed Values Added
CPE cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
References (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VLZ74IF2N75VQSIHBL4B3P5WKWQCXSRY/ - (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VLZ74IF2N75VQSIHBL4B3P5WKWQCXSRY/ - Mailing List, Third Party Advisory
References (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00036.html - (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00036.html - Mailing List, Third Party Advisory
References (DEBIAN) https://www.debian.org/security/2021/dsa-4884 - (DEBIAN) https://www.debian.org/security/2021/dsa-4884 - Third Party Advisory
References (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X5J3B6PN5XMXF3OHYBNHDKZ3XFSUGY4L/ - (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X5J3B6PN5XMXF3OHYBNHDKZ3XFSUGY4L/ - Mailing List, Third Party Advisory
References (CONFIRM) https://security.netapp.com/advisory/ntap-20210326-0007/ - (CONFIRM) https://security.netapp.com/advisory/ntap-20210326-0007/ - Third Party Advisory
References (MISC) https://www.samba.org/samba/security/CVE-2020-27840.html - (MISC) https://www.samba.org/samba/security/CVE-2020-27840.html - Vendor Advisory
References (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=1941400 - (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=1941400 - Issue Tracking, Third Party Advisory
References (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZXP3ONIY6MB4C5LDZV4YL5KJCES3UX24/ - (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZXP3ONIY6MB4C5LDZV4YL5KJCES3UX24/ - Mailing List, Third Party Advisory
CVSS v2 : unknown
v3 : unknown 		v2 : 5.0
v3 : 7.5
Information

Published : 2021-05-12 15:15

Updated : 2024-02-04 21:47

NVD link : CVE-2020-27840

Mitre link : CVE-2020-27840

CVE.ORG link : CVE-2020-27840

JSON object : View

Products Affected

samba

  • samba

debian

  • debian_linux

fedoraproject

  • fedora
CWE
CWE-125

Out-of-bounds Read