Exynos 2200 Firmware: Improper Validation of Integrity Check Value
CVE-2024-31958 is a high-severity improper validation of integrity check value vulnerability in Exynos 2200 Firmware from Samsung, with a CVSS 3.1 base score of 7.8 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. 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
- Check which version of Exynos 2200 Firmware you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on semiconductor.samsung.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Samsung | Exynos 2200 Firmware | Not specified in the record | Not stated |
| Samsung | Exynos 1480 Firmware | Not specified in the record | Not stated |
| Samsung | Exynos 2400 Firmware | Not specified in the record | Not stated |
Version data comes from NVD's product matching. 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
- 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:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 6.8 | Medium | CNA (mitre.org) |
| CVSS 3.1 | 7.8 | High | NVD |
Official description
An issue was discovered in Samsung Mobile Processor EExynos 2200, Exynos 1480, Exynos 2400. It lacks a check for the validation of native handles, which can result in an Out-of-Bounds Write.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Validation of Integrity Check Value
The product does not validate or incorrectly validates the integrity check values or checksums of a message.
How developers prevent this class of flaw
- The protocol specification describes the algorithm used for calculating the checksum. It is then a matter of implementing the calculation and verifying that the calculated checksum and the received checksum match.
More Improper Validation of Integrity Check Value vulnerabilities (CWE-354)
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 Exynos 2200 Firmware
- 9.8 Critical severity
- 7.5 High severity
- 10.0 Critical severity
- 9.1 Critical severity
- 7.5 High severity
- 7.5 High severity
Recent Improper Validation of Integrity Check Value vulnerabilities
- 7.6 High severity
- 8.3 High severity
- 7.5 High severity
- 7.8 High severity
- 7.7 High severity
- 9.8 Critical severity
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