Magic OS: Improper Verification of Cryptographic Signature
CVE-2023-23435 is a high-severity improper verification of cryptographic signature vulnerability in Magic OS from Honor, with a CVSS 3.1 base score of 7.1 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. The record lists version 7.1.0.137 as the first without the flaw, so updating Magic OS to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.11% 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 Magic OS to 7.1.0.137 or a later version.
- Update Magicos to 7.1.0.137 or a later version.
- Read the advisory on hihonor.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Honor | Magic OS | 7.1.0.127 up to, but not including, 7.1.0.137 | 7.1.0.137 |
| Honor | Magicos | before 7.1.0.137 | 7.1.0.137 |
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
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- NoneNo data is disclosed.
- 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:U/C:N/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 4.0 | Medium | CNA |
| CVSS 3.1 | 7.1 | High | NVD |
Official description
Some Honor products are affected by signature management vulnerability, successful exploitation could cause the forged system file overwrite the correct system file
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: partial).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in Magic OS
- 7.1 High severity
Recent Improper Verification of Cryptographic Signature vulnerabilities
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
- 7.5 High severity
- 8.8 High severity
- 7.5 High severity
Spotted an error? Tell us.