VDB-132217 · CVE-2019-4046 · XFDB 156242

IBM WebSphere Application Server 7.0/8.0/8.5/9.0 Request Header resource consumption

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.
6.2	$5k-$25k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in IBM WebSphere Application Server 7.0/8.0/8.5/9.0. This affects an unknown function of the component Request Header Handler. This manipulation causes resource consumption. This vulnerability is tracked as CVE-2019-4046. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in IBM WebSphere Application Server 7.0/8.0/8.5/9.0 (Application Server Software). It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component Request Header Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. The summary by CVE is:

IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 is vulnerable to a denial of service, caused by improper handling of request headers. A remote attacker could exploit this vulnerability to cause the consumption of Memory. IBM X-Force ID: 156242.

The bug was discovered 03/21/2019. The weakness was disclosed 03/25/2019 (Website). The advisory is shared at exchange.xforce.ibmcloud.com. This vulnerability is known as CVE-2019-4046 since 01/03/2019. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/07/2023). MITRE ATT&CK project uses the attack technique T1499 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371704 (IBM WebSphere Application Server Denial of Service Vulnerability (ibm10869570)).

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Application Server Software

Vendor

Name

WebSphere Application Server

Version

License

commercial

Website

Vendor: https://www.ibm.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.2

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

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 5.9
CNA Vector (IBM Corporation): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / 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
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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/03/2019 🔍
03/21/2019 +77 days 🔍
03/25/2019 +4 days 🔍
03/26/2019 +1 days 🔍
08/07/2023 +1595 days 🔍

Sourcesinfo

Vendor: ibm.com

Advisory: exchange.xforce.ibmcloud.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2019-4046 (🔍)
GCVE (CVE): GCVE-0-2019-4046
GCVE (VulDB): GCVE-100-132217
X-Force: 156242
SecurityFocus: 107623

Entryinfo

Created: 03/26/2019 14:06
Updated: 08/07/2023 11:28
Changes: 03/26/2019 14:06 (59), 05/20/2020 08:16 (1), 08/07/2023 11:20 (4), 08/07/2023 11:28 (12)
Complete: 🔍
Cache ID: 216::103