MegaRAC_SPx: Inadequate Encryption Strength
CVE-2023-34337 is a high-severity inadequate encryption strength vulnerability in MegaRAC_SPx from AMI, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. The record lists version 12.2 as the first without the flaw, so updating MegaRAC_SPx to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.2% 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
- Update MegaRAC_SPx to 12.2 or a later version.
- Read the advisory on 9443417.fs1.hubspotusercontent-na1.net for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| AMI | MegaRAC_SPx | 12.0 up to, but not including, 12.2 | 12.2 |
| Ami | Megarac Sp-x | 12; 13 | 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
- NetworkCan be exploited remotely over a network, including the internet.
- 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
- UnchangedImpact stays within the vulnerable component.
- 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:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.6 | High | CNA (ami.com) |
| CVSS 3.1 | 8.8 | High | NVD |
Official description
AMI SPx contains a vulnerability in the BMC where a user may cause an inadequate encryption strength by hash-based message authentication code (HMAC). A successful exploit of this vulnerability may lead to a loss of confidentiality, integrity, and availability.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Inadequate Encryption Strength
The product stores or transmits sensitive data using an encryption scheme that is theoretically sound, but is not strong enough for the level of protection required.
How developers prevent this class of flaw
- Use an encryption scheme that is currently considered to be strong by experts in the field.
More Inadequate Encryption Strength vulnerabilities (CWE-326)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other vulnerabilities in MegaRAC_SPx
- 9.8 Critical severity
- 8.8 High severity
- 8.8 High severity
- 8.8 High severity
- 8.8 High severity
- 8.8 High severity
Recent Inadequate Encryption Strength vulnerabilities
- 7.8 High severity
- 7.7 High severity
- 7.5 High severity
- 7.5 High severity
- 7.4 High severity
- 7.2 High severity
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