EBTS/MBTS Base Radio: Improper Verification of Cryptographic Signature
CVE-2023-23773 is a high-severity improper verification of cryptographic signature vulnerability in EBTS/MBTS Base Radio from Motorola, 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. Affected EBTS/MBTS Base Radio versions: R05.x2.57; r05.x2.57. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.46% 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 EBTS/MBTS Base Radio you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Motorola | EBTS/MBTS Base Radio | R05.x2.57; r05.x2.57 | Not stated |
| Motorola | Ebts Base Radio Firmware | r05.x2.57 | Not stated |
| Motorola | Mbts Base Radio Firmware | r05.x2.57 | 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 | 7.2 | High | CNA (ncsc.nl) |
| CVSS 3.1 | 8.8 | High | NVD |
Official description
Motorola EBTS/MBTS Base Radio fails to check firmware authenticity. The Motorola MBTS Base Radio lacks cryptographic signature validation for firmware update packages, allowing an authenticated attacker to gain arbitrary code execution, extract secret key material, and/or leave a persistent implant on the device.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Verification of Cryptographic Signature
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
More Improper Verification of Cryptographic Signature vulnerabilities (CWE-347)
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
Other references
- tetraburst.com/Not Applicable
Other vulnerabilities in EBTS/MBTS Base Radio
- 8.4 High severity
Recent Improper Verification of Cryptographic Signature vulnerabilities
- 8.8 High severity
- 7.5 High severity
- 7.5 High severity
- 9.8 Critical severity
- 7.8 High severity
- 7.8 High severity
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