PT-2023-2547 · Cisco · Cisco Staros

Adrien Mourier · Published 2023-04-19 · Updated 2024-01-25 · CVE-2023-20046

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Cisco StarOS Software (affected versions not specified)

Description The issue arises from insufficient validation of user-supplied credentials in the key-based SSH authentication feature. This could allow a remote attacker to elevate privileges on an affected device by sending a valid low-privileged SSH key from a host with an IP address 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.

Recommendations As a temporary workaround, consider restricting access to the SSH authentication feature until a patch is available. Restrict the use of low-privileged SSH keys to minimize the risk of exploitation. There are workarounds that address this vulnerability, but specific details are not provided. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Insufficiently Protected Credentials

Weakness Enumeration

CWE-522

CWE-289

CWE-255

Related Identifiers

BDU:2023-02354

CVE-2023-20046

Affected Products

Cisco Staros

References · 5

• https://bdu.fstec.ru/vul/2023-02354 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-staros-ssh-privesc-BmWeJC3h · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-20046 · Security Note
• https://osv.dev/vulnerability/CVE-2023-20046 · Vendor Advisory
• https://t.me/cvenotify/50682 · Telegram Post