Vulnerability Details : CVE-2023-20046
A vulnerability in the key-based SSH authentication feature of Cisco StarOS Software could allow an authenticated, remote attacker to elevate privileges on an affected device.
This vulnerability is due to insufficient validation of user-supplied credentials. An attacker could exploit this vulnerability by sending a valid low-privileged SSH key to an affected device from a host that has an IP address that is configured as the source for a high-privileged user account. A successful exploit could allow the attacker to log in to the affected device through SSH as a high-privileged user.
There are workarounds that address this vulnerability.
Products affected by CVE-2023-20046
- cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:staros:21.23.n:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:staros:21.24:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:staros:21.27.m:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:staros:21.28.m:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-20046
0.17%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 56 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-20046
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST | |
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
Cisco Systems, Inc. |
CWE ids for CVE-2023-20046
-
The product performs authentication based on the name of a resource being accessed, or the name of the actor performing the access, but it does not properly check all possible names for that resource or actor.Assigned by: ykramarz@cisco.com (Secondary)
-
The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.Assigned by: nvd@nist.gov (Primary)
References for CVE-2023-20046
-
https://github.com/orangecertcc/security-research/security/advisories/GHSA-j7p3-gjw6-pp4r
Cisco StarOS - SSH vulnerability (CVE-2023-20046) · Advisory · orangecertcc/security-research · GitHubThird Party Advisory
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https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-staros-ssh-privesc-BmWeJC3h
Cisco StarOS Software Key-Based SSH Authentication Privilege Escalation VulnerabilityVendor Advisory
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