Iocharger firmware for AC models: Path Traversal: 'dir/../../filename'
CVE-2024-43658 is a high-severity path traversal: 'dir/../../filename' vulnerability in Iocharger firmware for AC models from Iocharger, with a CVSS 4.0 base score of 7.2 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. The record lists version 25010801 as the first without the flaw, so updating Iocharger firmware for AC models to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.56% 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 Iocharger firmware for AC models to 25010801 or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Iocharger | Iocharger firmware for AC models | before 25010801 | 25010801 |
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.
- Attack requirements
- NoneThe attack does not depend on a particular deployment or configuration.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Confidentiality (vulnerable system)
- NoneNo loss of confidentiality on the vulnerable system.
- Integrity (vulnerable system)
- HighSerious loss of integrity on the vulnerable system.
- Availability (vulnerable system)
- HighSerious loss of availability on the vulnerable system.
- Confidentiality (other systems)
- NoneNo loss of confidentiality on systems beyond the vulnerable one.
- Integrity (other systems)
- NoneNo loss of integrity on systems beyond the vulnerable one.
- Availability (other systems)
- NoneNo loss of availability on systems beyond the vulnerable one.
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:X/V:X/RE:X/U:X. Scored by CNA (divd.nl).
Official description
Patch traversal, External Control of File Name or Path vulnerability in Iocharger Home allows deletion of arbitrary files This issue affects Iocharger firmware for AC model before firmware version 25010801. Likelihood: High, but requires authentication Impact: Critical – The vulnerability can be used to delete any file on the charging station, severely impacting the integrity of the charging station. Furthermore, the vulnerability could be used to delete binaries required for the functioning of the charging station, severely impacting the availability of the charging station. CVSS clarification: Any network interface serving the web ui is vulnerable (AV:N) and there are not additional security measures to circumvent (AC:L), nor does the attack require and existing preconditions (AT:N). The attack is authenticated, but the level of authentication does not matter (PR:L), nor is any user interaction required (UI:N). The attack leads compromised of the integrity and availability of the device (VVC:N/VI:H/VA:H), with no effect on subsequent systems (SC:N/SI:N/SA:N). We do not forsee a safety impact (S:N). This attack can be automated (AU:Y).
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Path Traversal: 'dir/../../filename'
The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize multiple internal../ sequences that can resolve to a location that is outside of that directory.
How developers prevent this class of flaw
- Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.
More Path Traversal: 'dir/../../filename' vulnerabilities (CWE-27)
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 Iocharger firmware for AC models
- 7.1 High severity
- 7.1 High severity
- 8.3 High severity
- 9.3 Critical severity
- 9.3 Critical severity
- 9.3 Critical severity
Recent Path Traversal: 'dir/../../filename' vulnerabilities
- 8.5 High severity
- 9.8 Critical severity
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