insydeh2o: Untrusted Pointer Dereference
CVE-2024-27353 is a high-severity untrusted pointer dereference vulnerability in insydeh2o from Insyde, with a CVSS 3.1 base score of 7.4 out of 10. It can be exploited with local access to the system by an attacker with administrator privileges, without any action from a user. The record lists versions 05.38.09, 05.46.09, 05.54.09 as the first without the flaw, so updating insydeh2o to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.17% 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 insydeh2o to 05.38.09 or 05.46.09 or 05.54.09 or 05.29.09, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Insyde | insydeh2o | 5.2 up to, but not including, 05.38.09; 5.3 up to, but not including, 05.46.09; 5.4 up to, but not including, 05.54.09; 5.5 up to, but not including, 05.29.09; 5.6 up to, but not including, 05.61.09 | 05.38.09, 05.46.09, 05.54.09, 05.29.09, 05.61.09 |
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
- HighSuccess depends on conditions outside the attacker's control.
- Privileges required
- HighAdministrator-level access is required first.
- 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
- LowPerformance or availability is reduced.
Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L. Scored by CISA (ADP).
Official description
A memory corruption vulnerability in SdHost and SdMmcDevice in Insyde InsydeH2O kernel 5.2 before 05.29.09, kernel 5.3 before 05.38.09, kernel 5.4 before 05.46.09, kernel 5.5 before 05.54.09, and kernel 5.6 before 05.61.09 could lead to escalating privileges in SMM.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Untrusted Pointer Dereference
The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.
More Untrusted Pointer Dereference vulnerabilities (CWE-822)
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
Other vulnerabilities in insydeh2o
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- 7.5 High severity
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- 7.4 High severity
- 7.4 High severity
- 7.8 High severity
Recent Untrusted Pointer Dereference vulnerabilities
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- 7.8 High severity
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