Vantage HardwareScan Plugin: Time-of-check Time-of-use (TOCTOU) Race Condition
CVE-2022-3702 is a high-severity time-of-check time-of-use (TOCTOU) race condition vulnerability in Vantage HardwareScan Plugin from Lenovo, 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 1.3.1.2 as the first without the flaw, so updating Vantage HardwareScan Plugin to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.13% 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 Vantage HardwareScan Plugin to 1.3.1.2 or a later version.
- Update System Update Plugin to 2.0.0.213 or a later version.
- Update Hardware Scan Plugin to 1.3.1.2 or a later version.
- Read the advisory on support.lenovo.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Lenovo | Vantage HardwareScan Plugin | before 1.3.1.2 | 1.3.1.2 |
| Lenovo | System Update Plugin | before 2.0.0.213 | 2.0.0.213 |
| Lenovo | Hardware Scan Plugin | before 1.3.1.2 | 1.3.1.2 |
| Lenovo | Hardware Scan Addin | before 2.4.1.1 | 2.4.1.1 |
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 | 6.1 | Medium | CNA (lenovo.com) |
| CVSS 3.1 | 7.1 | High | NVD |
Official description
A denial of service vulnerability was reported in Lenovo Vantage HardwareScan Plugin version 1.3.0.5 and earlier that could allow a local attacker to delete contents of an arbitrary directory under certain conditions.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Time-of-check Time-of-use (TOCTOU) Race Condition
The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.
How developers prevent this class of flaw
- The most basic advice for TOCTOU vulnerabilities is to not perform a check before the use. This does not resolve the underlying issue of the execution of a function on a resource whose state and identity cannot be assured, but it does help to limit the false sense of security given by the check.
- When the file being altered is owned by the current user and group, set the effective gid and uid to that of the current user and group when executing this statement.
- Limit the interleaving of operations on files from multiple processes.
More Time-of-check Time-of-use (TOCTOU) Race Condition vulnerabilities (CWE-367)
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
Advisories
Recent Time-of-check Time-of-use (TOCTOU) Race Condition vulnerabilities
- 7.0 High severity
- 7.0 High severity
- 8.1 High severity
- 7.8 High severity
- 7.0 High severity
- 7.0 High severity
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