CVE-2020-27840
CVSS V2 Medium 5
CVSS V3 High 7.5
Description
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.
Overview
- CVE ID
- CVE-2020-27840
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-05-12T15:15:07
- Last Modified Date
- 2021-05-26T19:46:21
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* | 1 | OR | 4.0.0 | 4.12.13 |
| cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* | 1 | OR | 4.13.0 | 4.13.6 |
| cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* | 1 | OR | 4.14.0 | 4.14.1 |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| 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://security.netapp.com/advisory/ntap-20210326-0007/ | Third Party Advisory |
| https://www.samba.org/samba/security/CVE-2020-27840.html | Vendor Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZXP3ONIY6MB4C5LDZV4YL5KJCES3UX24/ | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VLZ74IF2N75VQSIHBL4B3P5WKWQCXSRY/ | Mailing List Third Party Advisory |
| https://www.debian.org/security/2021/dsa-4884 | Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X5J3B6PN5XMXF3OHYBNHDKZ3XFSUGY4L/ | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202105-22 | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-27840 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27840 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:14:35 | Added to TrackCVE | |||
| 2022-12-05 02:09:46 | 2021-05-12T15:15Z | 2021-05-12T15:15:07 | CVE Published Date | updated |
| 2022-12-05 02:09:46 | 2021-05-26T19:46:21 | CVE Modified Date | updated | |
| 2022-12-05 02:09:46 | Analyzed | Vulnerability Status | updated |