CVE intelligence and bounded remediation

CVE-2023-25188 — An issue was discovered on NOKIA Airscale ASIKA Single RAN devices before 21B

High CVSS 7.8

An issue was discovered on NOKIA Airscale ASIKA Single RAN devices before 21B. If/when CSP (as a BTS administrator) removes security hardenings from the Nokia Single RAN BTS baseband unit, the BTS baseband unit diagnostic tool AaShell (which is by default disabled) allows unauthenticated access from the mobile network solution internal BTS management network to the BTS embedded Linux operating-system level.

Severity
High
CVSS
7.8 (3.1)
Published
2023-06-16
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-269, CWE-346

Affected products

  • nokia / asika_airscale_firmware / 19b
  • nokia / asika_airscale_firmware / 20a
  • nokia / asika_airscale_firmware / 20b
  • nokia / asika_airscale_firmware / 20c
  • nokia / asika_airscale_firmware / 21a

Matched remediation archetype

Privilege escalation and unsafe privilege management

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map service accounts, operating-system identities, roles, capabilities, impersonation, set-user transitions, and administrative helper paths.
  • Determine whether untrusted users or lower-privilege processes can reach the affected transition or modify inputs it trusts.
  • Review file, socket, registry, device, job, container, and cloud-role permissions used before and after privilege changes.

Remediate safely

  • Apply the supported fix and redesign privileged operations as a minimal, authenticated, allowlisted interface.
  • Drop privileges before processing untrusted input, verify the drop succeeds, and remove unnecessary roles, capabilities, and write permissions.
  • Validate ownership and permissions at time of use and add explicit lower-to-higher privilege boundary tests.

Authoritative sources

Complete CVE record and remediation plan

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