CVE-2024-43661
Jan. 9, 2025, 3:15 p.m.
7.1
High
Description
The <redacted>.so library, which is used by <redacted>, is
vulnerable to a buffer overflow in the code that handles the deletion
of certificates. This buffer overflow can be triggered by providing a
long file path to the <redacted> action of the <redacted>.exe CGI binary or
to the <redacted>.sh CGI script. This binary or script will write this
file path to <redacted>, which is then
read by <redacted>.so
This issue affects Iocharger firmware for AC models before version 24120701.
Likelihood: Moderate – An attacker will have to find this exploit by
either obtaining the binaries involved in this vulnerability, or by trial
and error. Furthermore, the attacker will need a (low privilege)
account to gain access to the <redacted>.exe CGI binary or <redacted>.sh
script to trigger the vulnerability, or convince a user with such access
send an HTTP request that triggers it.
Impact: High – The <redacted> process, which we assume is
responsible for OCPP communication, will keep crashing after
performing the exploit. This happens because the buffer overflow
causes the process to segfault before
<redacted> is removed. This means that,
even though <redacted> is automatically restarted, it will crash
again as soon as it tries to parse the text file.
CVSS clarification. The attack can be executed over any network connection the station is listening to and serves the web interface (AV:N), and there are no additional security measure sin place that need to be circumvented (AC:L), the attack does not rely on preconditions (AT:N). The attack does require authentication, but the level of authentication is irrelevant (PR:L), it does not require user interaction (UI:N). The attack leads to reducred availability of the device (VC:N/VI:N/VA:H). THere is not impact on subsequent systems. (SC:N/SI:N/SA:N). Alltough this device is an EV charger handing significant amounts of power, we do not forsee a safety impact. The attack can be automated (AU:Y). Because the DoS condition is written to disk persistantly, it cannot be recovered by the user (R:I).
Product(s) Impacted
| Product | Versions |
|---|---|
| Iocharger firmware for AC models |
|
Weaknesses
Common security weaknesses mapped to this vulnerability.
CWE-121
Stack-based Buffer Overflow
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
Tags
CVSS Score
CVSS Data - 4.0
- Attack Vector: NETWORK
- Attack Complexity: LOW
- Attack Requirements: NONE
- Privileges Required: LOW
- User Interaction: NONE
- Scope:
- Confidentiality Impact: NONE
- Integrity Impact: NONE
- Availability Impact: HIGH
- Exploit Maturity: NOT_DEFINED
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/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:X/AU:Y/R:I/V:X/RE:X/U:X
Timeline
Published: Jan. 9, 2025, 8:15 a.m.
Last Modified: Jan. 9, 2025, 3:15 p.m.
Last Modified: Jan. 9, 2025, 3:15 p.m.
Status : Awaiting Analysis
CVE has been marked for Analysis. Normally once in this state the CVE will be analyzed by NVD staff within 24 hours.
More infoSource
csirt@divd.nl
*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.