The vulnerability of the sanitiseMatchedBytes configuration of the firewall for protecting web applications, ModSecurity, allows attackers to trigger a denial-of-service attack.

The vulnerability of the sanitiseMatchedBytes configuration on the network interface for protecting web applications with ModSecurity is related to excessive resource consumption during the cycle. Exploiting this vulnerability can allow an attacker to cause service interruptions...

[SECURITY] [DLA 4192-1] modsecurity-apache security update

------------------------------------------------------------------------- Debian LTS Advisory DLA-4192-1 [email protected] https://www.debian.org/lts/security/ Adrian Bunk May 29, 2025 https://wiki.debian.org/LTS -...

DLA-4192-1 modsecurity-apache - security update

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Debian dla-4192 : libapache2-mod-security2 - security update

The remote Debian 11 host has a package installed that is affected by a vulnerability as referenced in the dla-4192 advisory. - ------------------------------------------------------------------------- Debian LTS Advisory DLA-4192-1 [email protected] https://www.debian.org/lts/security/...

BIT-MODSECURITY2-2025-47947 ModSecurity Has Possible DoS Vulnerability

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Versions up to and including 2.9.8 are vulnerable to denial of service in one special case in stable released versions: when the payload's content type is application/json, and there is at...

BIT-MODSECURITY-2025-47947 ModSecurity Has Possible DoS Vulnerability

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Versions up to and including 2.9.8 are vulnerable to denial of service in one special case in stable released versions: when the payload's content type is application/json, and there is at...

CVE-2023-38199

coreruleset aka OWASP ModSecurity Core Rule Set through 3.3.4 does not detect multiple Content-Type request headers on some platforms. This might allow attackers to bypass a WAF with a crafted payload, aka "Content-Type confusion" between the WAF and the backend application. This occurs when the...

CVE-2020-22669

Modsecurity owasp-modsecurity-crs 3.2.0 Paranoia level at PL1 has a SQL injection bypass vulnerability. Attackers can use the comment characters and variable assignments in the SQL syntax to bypass Modsecurity WAF protection and implement SQL injection attacks on Web applications...

CVE-2019-11391

An issue was discovered in OWASP ModSecurity Core Rule Set CRS through 3.1.0. /rules/REQUEST-933-APPLICATION-ATTACK-PHP.conf allows remote attackers to cause a denial of service ReDOS by entering a specially crafted string with $a at the beginning and nested repetition operators. NOTE: the softwa...

CVE-2019-11387

An issue was discovered in OWASP ModSecurity Core Rule Set CRS through 3.1.0. /rules/REQUEST-942-APPLICATION-ATTACK-SQLI.conf allows remote attackers to cause a denial of service ReDOS by entering a specially crafted string with nested repetition operators...

CVE-2019-13464

An issue was discovered in OWASP ModSecurity Core Rule Set CRS 3.0.2. Use of X.Filename instead of XFilename can bypass some PHP Script Uploads rules, because PHP automatically transforms dots into underscores in certain contexts where dots are invalid...

CVE-2025-47947

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Versions up to and including 2.9.8 are vulnerable to denial of service in one special case in stable released versions: when the payload's content type is application/json, and there is at...

DEBIAN-CVE-2025-47947

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Versions up to and including 2.9.8 are vulnerable to denial of service in one special case in stable released versions: when the payload's content type is application/json, and there is at...

UBUNTU-CVE-2025-47947

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Versions up to and including 2.9.8 are vulnerable to denial of service in one special case in stable released versions: when the payload's content type is application/json, and there is at...

CVE-2025-47947 ModSecurity Has Possible DoS Vulnerability

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Versions up to and including 2.9.8 are vulnerable to denial of service in one special case in stable released versions: when the payload's content type is application/json, and there is at...

CVE-2025-47947 ModSecurity Has Possible DoS Vulnerability

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Versions up to and including 2.9.8 are vulnerable to denial of service in one special case in stable released versions: when the payload's content type is application/json, and there is at...

CVE-2025-47947

CVE-2025-47947 affects ModSecurity up to v2.9.8, where a DoS can occur when the payload is application/json and a sanitiseMatchedBytes action is present. A patch was developed (pull request 3389) and is expected in v2.9.9; no public workarounds are listed. Related advisories confirm denial-of-ser...

CVE-2025-47947

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Versions up to and including 2.9.8 are vulnerable to denial of service in one special case in stable released versions: when the payload's content type is application/json, and there is at...

CVE-2025-47947 ModSecurity Has Possible DoS Vulnerability

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Versions up to and including 2.9.8 are vulnerable to denial of service in one special case in stable released versions: when the payload's content type is application/json, and there is at...

ModSecurity -- possible DoS vulnerability

[email protected] reports: ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Versions up to and including 2.9.8 are vulnerable to denial of service in one special case in stable released versions: when the payload's content...