Full Report
A Cybersecurity and Infrastructure Security Agency tool dedicated to helping government agencies buy secure software turned out to have a cybersecurity vulnerability of its own. Jeff Williams, the former leader of the Open Worldwide Application Security Project (OWASP), told CyberScoop that he discovered a cross-site scripting vulnerability in CISA’s “Software Acquisition Guide: Supplier Response Web Tool” and…
Analysis Summary
# Vulnerability: Cross-Site Scripting (XSS) in CISA Software Acquisition Guide Web Tool
## CVE Details
- CVE ID: Not provided in the source material.
- CVSS Score: Not provided in the source material.
- CWE: Cross-Site Scripting (CWE-79 is likely, based on description).
## Affected Systems
- Products: CISA’s “Software Acquisition Guide: Supplier Response Web Tool”
- Versions: Unknown, but the vulnerability was reported in September and fixed in December (year unspecified, but context implies recent reporting).
- Configurations: Unknown, potentially affecting any deployment of the web tool.
## Vulnerability Description
The vulnerability is a Cross-Site Scripting (XSS) flaw discovered in the web tool. This flaw allows an attacker to inject malicious JavaScript code into a web page served by the tool. When other users access that compromised page, the injected script executes in their browser. This can lead to session hijacking, cookie theft, or unauthorized actions performed on behalf of the victim user.
## Exploitation
- Status: The vulnerability was reported after discovery but before closure. Exploitation in the wild is **unknown** based on this source.
- Complexity: Likely **Low**, as XSS is generally straightforward to exploit once the injection vector is found.
- Attack Vector: **Network** (via crafted web input).
## Impact
- Confidentiality: Potential impact via session hijacking or data exfiltration.
- Integrity: Potential impact via unauthorized modification of user interactions or website defacement.
- Availability: Minor impact, potentially including denial of service for specific users experiencing script execution errors, or website defacement.
## Remediation
### Patches
- The vulnerability was **fixed in December** following the report in September. Specific patch details or version numbers are **not available** in the source.
### Workarounds
- No specific workarounds were mentioned in the provided text. A general immediate workaround would be to restrict user input validation or access until an official patch is confirmed, although this is not detailed here.
## Detection
- Detection methods would typically involve monitoring web application logs for unusual or encoded input parameters, specifically looking for common XSS payloads (e.g., `<script>`, `onerror`, `alert()`).
- Indicators of Compromise (IoC) would be highly dependent on the specific payload used, potentially involving unexpected cross-domain communication initiated by the web tool's domain.
## References
- Supplier Web Tool Link: hXXps://www.cisa.gov/software-acquisition-guide/tool
- Original Discovery Reporter: Jeff Williams (OWASP former leader)
- Source Article Reference: hXXps://cyberscoop.com/cisa-secure-software-buying-tool-had-a-simple-xss-vulnerability-of-its-own/