CVE-2023-28531

Aliases:ALPINE-CVE-2023-28531DEBIAN-CVE-2023-28531
Advisory lineage Upstream: 0 Downstream: 4
Modified
Published: 17 Mar 2023, 00:00
Last modified:08 Sept 2026, 08:30

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
v3.1 (nvd)
EPSS Score
2.27% LOW
2% probability +1.94%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

17 Mar 2023, 00:00
Published
Vulnerability first disclosed
08 Sept 2026, 08:30
Last Modified
Vulnerability information updated

Description

ssh-add in OpenSSH before 9.3 adds smartcard keys to ssh-agent without the intended per-hop destination constraints. The earliest affected version is 8.9.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 2.27%• Percentile: 82%

Techniques & Countermeasures

  • CWE-284•Improper Access Control

    The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Affected Systems

  • alpine•openssh

    ≥ 8.9, < 9.0_p1-r3 | ≥ 8.9, < 9.1_p1-r3

  • debian•openssh

    < 1:9.2p1-2+deb12u2 | < 1:9.3p1-1 | < 1:9.3p1-1

  • netapp•brocade_fabric_operating_system

    na

  • netapp•hci_bootstrap_os

    na

  • netapp•solidfire_element_os

    na

  • openbsd•openssh

    ≥ 8.9, < 9.3

References (10)