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How the CVE Works
The vulnerability is an improper limitation of a pathname, classified as CWE-22 Path Traversal. In affected versions of AlgoSec Firewall Analyzer on Linux 64-bit, the application fails to properly sanitize user-supplied input for file operations. An authenticated user can exploit this flaw by manipulating file upload parameters to include directory traversal sequences, such as ../. This allows the attacker to break out of the intended directory and write files to restricted, sensitive filesystem locations. By uploading a malicious file to a targeted directory, the attacker can achieve code injection on the host system. The exploitation leads to remote code execution under the context of the application’s process. This compromises the confidentiality, integrity, and availability of the system.
DailyCVE Form
Platform: AlgoSec Firewall Analyzer
Version: A33.0 (<=build320)
Vulnerability: Path Traversal
Severity: High
date: 2025-11-12
Prediction: Patch available 2025-11-13
What Undercode Say
Showing bash commands and codes related to the blog
`curl -X POST -F “[email protected]” -F “path=../../../etc/cron.d/exploit” https://target/upload`
`echo “malicious_payload” > /restricted/location/injected_file</h2>
<h2 style="color: blue;">../bin/bash -c “id; uname -a”`
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How Exploit
- Attacker authenticates to the AlgoSec Firewall Analyzer web interface.
- Attacker accesses a file upload function within the application.
- Attacker crafts a request with a manipulated filename or path parameter containing traversal sequences.
- The request bypasses validation and writes a malicious script to a critical system directory (e.g., a web root or cron directory).
- The attacker triggers the executed script, leading to remote code execution.
Protection from this CVE
Upgrade to fixed versions: A33.0 build 330+ or A33.10 build 220+.
Apply vendor-provided security updates immediately.
Restrict network access to the management interface.
Implement strict input validation for all file operations.
Impact
Allows authenticated remote code execution.
High impact on system confidentiality, integrity, and availability.
CVSS v3.1 Base Score: 8.8 HIGH.
Can lead to full compromise of the affected appliance.
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Sources:
Reported By: nvd.nist.gov
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