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PatchSiren cyber security CVE debrief

CVE-2015-2348 Festo Didactic SE CVE debrief

CVE-2015-2348 is a critical file-handling flaw in PHP's move_uploaded_file implementation. A crafted pathname containing a NUL byte can be truncated, which may let an attacker bypass intended extension restrictions and create a file under an unexpected name. The supplied advisory corpus also notes that this is an incomplete fix for CVE-2006-7243 and maps the issue to Festo Didactic SE's MES PC advisory context.

Vendor
Festo Didactic SE
Product
MES PC
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2024-02-27
Original CVE updated
2026-01-27
Advisory published
2024-02-27
Advisory updated
2026-01-27

Who should care

Administrators and defenders responsible for Festo Didactic SE MES PC deployments named in the supplied CSAF advisory, especially where PHP-based upload handling or bundled XAMPP components may still be present, should validate exposure and patch status immediately.

Technical summary

The vulnerability is described as a pathname truncation issue in PHP ext/standard/basic_functions.c: when move_uploaded_file encounters a \x00 character, the pathname may be truncated before validation is complete. That can defeat extension-based restrictions and result in files being created with unexpected names. The supplied record lists affected PHP branches as versions before 5.4.39, 5.5.x before 5.5.23, and 5.6.x before 5.6.7, and identifies the weakness as CWE-626.

Defensive priority

Critical. The impact profile in the supplied CVSS vector is network-reachable, requires no privileges or user interaction, and is rated for high confidentiality, integrity, and availability impact. Treat as urgent for any exposed or still-supported deployment that depends on the affected PHP behavior.

Recommended defensive actions

  • Confirm whether any affected PHP versions are present in the MES PC environment or in any bundled web/upload component.
  • Upgrade to PHP releases at or beyond 5.4.39, 5.5.23, or 5.6.7, or remove the affected component entirely where feasible.
  • Follow the supplied vendor remediation: obtain and deploy the current Factory Control Panel replacement for XAMPP from Festo technical support.
  • Review upload and file-creation code paths for strict pathname validation and rejection of embedded NUL bytes.
  • Audit for unexpected file creation or renamed uploads in systems that use the affected workflow.

Evidence notes

The CVE description states that move_uploaded_file in PHP before 5.4.39/5.5.23/5.6.7 truncates a pathname at a NUL byte, allowing bypass of extension restrictions and unexpected file creation. The CISA CSAF source item maps CVE-2015-2348 to Festo Didactic SE MES PC and includes a remediation advising replacement of XAMPP with Factory Control Panel. The supplied references also include the official CVE record, NVD entry, and CWE-626 reference.

Sources and references

Verified primary and authoritative sources

  • CVE-2015-2348 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2015-2348

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2015-2348 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2015-2348

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-027-02.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://festo.csaf-tp.certvde.com/.well-known/csaf/white/2024/fsa-202402.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://certvde.com/en/advisories/vendor/festo/

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://festo.com/psirt

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://certvde.com/en/advisories/VDE-2023-065

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-26-027-02

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.