VDB-149192 · CVE-2019-19886 · GCVE-0-2019-19886

Trustwave ModSecurity 3.0.0/3.0.1/3.0.2/3.0.3 transaction.cc addRequestHeader Request denial of service

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.4	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Trustwave ModSecurity 3.0.0/3.0.1/3.0.2/3.0.3. Affected is the function Transaction::addRequestHeader of the file transaction.cc. Such manipulation as part of Request leads to denial of service. This vulnerability is uniquely identified as CVE-2019-19886. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Trustwave ModSecurity 3.0.0/3.0.1/3.0.2/3.0.3. It has been rated as problematic. Affected by this issue is the function Transaction::addRequestHeader of the file transaction.cc. The manipulation as part of a Request leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. CVE summarizes:

Trustwave ModSecurity 3.0.0 through 3.0.3 allows an attacker to send crafted requests that may, when sent quickly in large volumes, lead to the server becoming slow or unresponsive (Denial of Service) because of a flaw in Transaction::addRequestHeader in transaction.cc.

The weakness was disclosed 01/21/2020 (Website). The advisory is shared for download at trustwave.com. This vulnerability is handled as CVE-2019-19886 since 12/18/2019. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Trustwave

Name

ModSecurity

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/18/2019 🔍
01/21/2020 +34 days 🔍
01/22/2020 +1 days 🔍
07/04/2025 +1989 days 🔍

Sourcesinfo

Advisory: FEDORA-2020-1b5b3b465d
Status: Not defined

CVE: CVE-2019-19886 (🔍)
GCVE (CVE): GCVE-0-2019-19886
GCVE (VulDB): GCVE-100-149192
scip Labs: https://www.scip.ch/en/?labs.20130913

Entryinfo

Created: 01/22/2020 11:57
Updated: 07/04/2025 01:12
Changes: 01/22/2020 11:57 (39), 01/22/2020 12:02 (17), 03/25/2024 08:56 (17), 07/04/2025 01:12 (2)
Complete: 🔍
Cache ID: 216::103