CVE-2023-29383 (GCVE-0-2023-29383)

Vulnerability from cvelistv5 – Published: 2023-04-14 00:00 – Updated: 2026-10-14 22:55
VLAI
Summary
In Shadow 4.13, it is possible to inject control characters into fields provided to the SUID program chfn (change finger). Although it is not possible to exploit this directly (e.g., adding a new user fails because \n is in the block list), it is possible to misrepresent the /etc/passwd file when viewed. Use of \r manipulations and Unicode characters to work around blocking of the : character make it possible to give the impression that a new user has been added. In other words, an adversary may be able to convince a system administrator to take the system offline (an indirect, social-engineered denial of service) by demonstrating that "cat /etc/passwd" shows a rogue user account.
Severity
No CVSS data available.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-06 21:21 UTC
CWE
Assigner
mitre CNA under the mitre root
CNA scorecard E 28/100 over 2350 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens RUGGEDCOM ROX MX5000 Affected: 0 , < V2.17.0 (custom)
guessed Create a notification for this product.
Siemens RUGGEDCOM ROX MX5000RE Affected: 0 , < V2.17.0 (custom)
guessed Create a notification for this product.
Siemens RUGGEDCOM ROX RX1400 Affected: 0 , < V2.17.0 (custom)
guessed Create a notification for this product.
Siemens RUGGEDCOM ROX RX1500 Affected: 0 , < V2.17.0 (custom)
guessed Create a notification for this product.
Siemens RUGGEDCOM ROX RX1501 Affected: 0 , < V2.17.0 (custom)
guessed Create a notification for this product.
Siemens RUGGEDCOM ROX RX1510 Affected: 0 , < V2.17.0 (custom)
guessed Create a notification for this product.
Siemens RUGGEDCOM ROX RX1511 Affected: 0 , < V2.17.0 (custom)
guessed Create a notification for this product.
Siemens RUGGEDCOM ROX RX1512 Affected: 0 , < V2.17.0 (custom)
guessed Create a notification for this product.
Siemens RUGGEDCOM ROX RX1524 Affected: 0 , < V2.17.0 (custom)
guessed Create a notification for this product.
Siemens RUGGEDCOM ROX RX1536 Affected: 0 , < V2.17.0 (custom)
guessed Create a notification for this product.
Siemens RUGGEDCOM ROX RX5000 Affected: 0 , < V2.17.0 (custom)
guessed Create a notification for this product.
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  }
}



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