Kostac PLC Programming Software (Former name…: Out-of-bounds Read
CVE-2024-47136 is a high-severity out-of-bounds read vulnerability in Kostac PLC Programming Software (Former name: Koyo PLC Programming Software) from JTEKT ELECTRONICS, 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 unauthenticated attacker, but only if a user takes part, for example by opening a link or file. Affected Kostac PLC Programming Software (Former name: Koyo PLC Programming Software) versions: 1.6.14.0 and earlier. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.27% 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 Kostac Plc to 1.6.15.0 or a later version.
- Read the advisory on electronics.jtekt.co.jp for workarounds and exact fixed builds.
- Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| JTEKT ELECTRONICS | Kostac PLC Programming Software (Former name: Koyo PLC Programming Software) | 1.6.14.0 and earlier | Not stated |
| Jtekt | kostac_plc_programming_software | 1.6.14.0 and earlier | Not stated |
| Jtekt | Kostac Plc | before 1.6.15.0 | 1.6.15.0 |
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
- NoneNo account or login is needed.
- User interaction
- RequiredA user must take an action such as opening a file or link.
- 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:N/UI:R/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.8 | High | CNA (jpcert.or.jp) |
| CVSS 3.1 | 7.8 | High | NVD |
Official description
Out-of-bounds read vulnerability exists in Kostac PLC Programming Software (Former name: Koyo PLC Programming Software) Version 1.6.14.0 and earlier. Having a user open a specially crafted project file which was saved using Kostac PLC Programming Software Version 1.6.9.0 and earlier may cause a denial-of-service (DoS) condition, arbitrary code execution, and/or information disclosure because the issues exist in parsing of KPP project files.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.
How developers prevent this class of flaw
- Use a language that provides appropriate memory abstractions.
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
Advisories
Third-party and government advisories
- jvn.jp/en/vu/JVNVU92808077/Third Party Advisory
Other vulnerabilities in Kostac PLC Programming Software (Former name: Koyo PLC Programming Software)
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
Recent Out-of-bounds Read vulnerabilities
- 8.0 High severity
- 7.8 High severity
- 8.1 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
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