- Description
- ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Prior to 3.0.16, the multipart/form-data request body parser in libmodsecurity silently removes embedded line breaks from non-file form-field values before exporting them to ARGS and ARGS_POST because src/request_body_processor/multipart.cc overwrites reserved bytes in m_reserve instead of appending the current buffer. This creates a parser differential between ModSecurity and backend applications that preserve line breaks in form fields, allowing rules that inspect ARGS or ARGS_POST to miss payloads whose dangerous syntax depends on a line break. This issue is fixed in version 3.0.16.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
- Products
- modsecurity
CVSS 3.1
- Type
- Primary
- Base score
- 8.6
- Impact score
- 4
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
- Severity
- HIGH
- security-advisories@github.com
- CWE-180
- Hype score
- Not currently trending
[
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:owasp:modsecurity:*:*:*:*:*:*:*:*",
"matchCriteriaId": "7EA032F7-7C09-40A5-9936-C6C59E45DACE",
"versionEndExcluding": "3.0.16",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
]