CWE-69

Improper Handling of Windows ::DATA Alternate Data Stream

The product does not properly prevent access to, or detect usage of, alternate data streams (ADS).

CVE-2025-3941 (GCVE-0-2025-3941)
Vulnerability from cvelistv5
Published
2025-05-22 12:38
Modified
2025-05-22 13:52
CWE
  • CWE-69 - Improper Handling of Windows ::DATA Alternate Data Stream
Summary
Improper Handling of Windows ::DATA Alternate Data Stream vulnerability in Tridium Niagara Framework on Windows, Tridium Niagara Enterprise Security on Windows allows Input Data Manipulation. This issue affects Niagara Framework: before 4.14.2, before 4.15.1, before 4.10.11; Niagara Enterprise Security: before 4.14.2, before 4.15.1, before 4.10.11.Tridium recommends upgrading to Niagara Framework and Enterprise Security versions 4.14.2u2, 4.15.u1, or 4.10u.11.
Impacted products
Vendor Product Version
Tridium Niagara Framework Version: 0   < 4.14.2
Version: 0   < 4.15.1
Version: 0   < 4.10.11
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   Tridium Niagara Enterprise Security Version: 0   < 4.14.2
Version: 0   < 4.15.1
Version: 0   < 4.10.11
Create a notification for this product.
Show details on NVD website


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CVE-2026-52792 (GCVE-0-2026-52792)
Vulnerability from cvelistv5
Published
2026-08-19 14:49
Modified
2026-08-19 15:21
CWE
  • CWE-69 - Improper Handling of Windows ::DATA Alternate Data Stream
Summary
Algernon is a small self-contained pure-Go web server. Prior to 1.17.9, Algernon on Windows selects a file handler in engine/handlers.go by calling filepath.Ext() without first rejecting NTFS-equivalent names such as x.lua::$DATA, x.lua., and x.lua . An unauthenticated client can append one of these suffixes to a public server-side script using the .lua, .tl, .po2, .amber, or .frm extension. The request path passes through URL2filename in utils/files.go, skips the renderer and execution cases, and reaches FilePage, os.Open, ReadAndLogErrors, and ToClient, while NTFS resolves the alias to the underlying script. The server consequently returns raw script source and can expose database credentials, API keys, and the SetCookieSecret value, which may permit forged session cookies. Linux and macOS hosts are not affected by this issue. This issue is fixed in version 1.17.9.
Impacted products
Vendor Product Version
xyproto algernon Version: < 1.17.9
Create a notification for this product.
Show details on NVD website


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Mitigation

Phase: Implementation

Description:

  • Ensure that the source code correctly parses the filename to read or write to the correct stream.
CAPEC-168: Windows ::DATA Alternate Data Stream

An attacker exploits the functionality of Microsoft NTFS Alternate Data Streams (ADS) to undermine system security. ADS allows multiple "files" to be stored in one directory entry referenced as filename:streamname. One or more alternate data streams may be stored in any file or directory. Normal Microsoft utilities do not show the presence of an ADS stream attached to a file. The additional space for the ADS is not recorded in the displayed file size. The additional space for ADS is accounted for in the used space on the volume. An ADS can be any type of file. ADS are copied by standard Microsoft utilities between NTFS volumes. ADS can be used by an attacker or intruder to hide tools, scripts, and data from detection by normal system utilities. Many anti-virus programs do not check for or scan ADS. Windows Vista does have a switch (-R) on the command line DIR command that will display alternate streams.

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