ASIK AirScale: Improper Access Control for Volatile Memory Containing Boot Code
CVE-2022-2482 is a high-severity improper access control for volatile memory containing boot code vulnerability in ASIK AirScale from Nokia, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. Affected ASIK AirScale versions: 474021A.101; 474021A.102. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.22% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of ASIK AirScale you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Nokia | ASIK AirScale | 474021A.101; 474021A.102 | Not stated |
| Nokia | Asik Airscale 474021a.102 Firmware | Not specified in the record | Not stated |
| Nokia | Asik Airscale 474021a.101 Firmware | Not specified in the record | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- ChangedThe attack can reach beyond the vulnerable component into other systems.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 8.4 | High | CNA (hq.dhs.gov) |
| CVSS 3.1 | 8.8 | High | NVD |
Official description
A vulnerability exists in Nokia’s ASIK AirScale system module (versions 474021A.101 and 474021A.102) that could allow an attacker to place a script on the file system accessible from Linux. A script placed in the appropriate place could allow for arbitrary code execution in the bootloader.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Access Control for Volatile Memory Containing Boot Code
The product conducts a secure-boot process that transfers bootloader code from Non-Volatile Memory (NVM) into Volatile Memory (VM), but it does not have sufficient access control or other protections for the Volatile Memory.
How developers prevent this class of flaw
- Ensure that the design of volatile-memory protections is enough to prevent modification from an adversary or untrusted code.
- Test the volatile-memory protections to ensure they are safe from modification or untrusted code.
More Improper Access Control for Volatile Memory Containing Boot Code vulnerabilities (CWE-1274)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- cisa.gov/uscert/ics/advisories/icsa-22-307-02Third Party Advisory, US Government Resource
Other vulnerabilities in ASIK AirScale
- 7.8 High severity
- 7.1 High severity
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