CVE-2020-15795
CVSS V2 Medium 6.8
CVSS V3 High 8.1
Description
A vulnerability has been identified in Nucleus NET (All versions < V5.2), Nucleus Source Code (Versions including affected DNS modules). The DNS domain name label parsing functionality does not properly validate the names in DNS-responses. The parsing of malformed responses could result in a write past the end of an allocated structure. An attacker with a privileged position in the network could leverage this vulnerability to execute code in the context of the current process or cause a denial-of-service condition.
Overview
- CVE ID
- CVE-2020-15795
- Assigner
- productcert@siemens.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-04-22T21:15:09
- Last Modified Date
- 2022-04-29T01:52:01
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:siemens:nucleus_net:*:*:*:*:*:*:*:* | 1 | OR | 5.2 | |
| cpe:2.3:a:siemens:nucleus_source_code:-:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 6.8
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- HIGH
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 8.1
- Base Severity
- HIGH
- Exploitability Score
- 2.2
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://cert-portal.siemens.com/productcert/pdf/ssa-185699.pdf | Vendor Advisory |
| https://us-cert.cisa.gov/ics/advisories/icsa-21-103-04 | Third Party Advisory US Government Resource |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-15795 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15795 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-08 06:20:41 | Added to TrackCVE | |||
| 2022-12-06 02:23:09 | 2021-04-22T21:15Z | 2021-04-22T21:15:09 | CVE Published Date | updated |
| 2022-12-06 02:23:09 | 2022-04-29T01:52:01 | CVE Modified Date | updated | |
| 2022-12-06 02:23:09 | Analyzed | Vulnerability Status | updated |