VDB-127871 · CVE-2018-2492 · BID 106153

SAP NetWeaver AS JAVA up to 7.50 SAML 2.0 XML Document input validation

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.
7.1	$5k-$25k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in SAP NetWeaver AS JAVA 7.2/7.30/7.31/7.40/7.50. The impacted element is an unknown function of the component SAML 2.0 Handler. The manipulation as part of XML Document leads to input validation. This vulnerability is documented as CVE-2018-2492. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in SAP NetWeaver AS JAVA 7.2/7.30/7.31/7.40/7.50 (Solution Stack Software). It has been rated as critical. This issue affects some unknown functionality of the component SAML 2.0 Handler. The manipulation as part of a XML Document leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is integrity, and availability. The summary by CVE is:

SAML 2.0 functionality in SAP NetWeaver AS Java, does not sufficiently validate XML documents received from an untrusted source. This is fixed in versions 7.2, 7.30, 7.31, 7.40 and 7.50.

The bug was discovered 12/12/2018. The weakness was released 12/11/2018 (Website). It is possible to read the advisory at securityfocus.com. The identification of this vulnerability is CVE-2018-2492 since 12/15/2017. The exploitation is known to be easy. The attack may be initiated remotely. A simple authentication is required for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 04/20/2020).

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

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 106153†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Solution Stack Software

Vendor

Name

NetWeaver AS JAVA

Version

License

commercial

Website

Vendor: https://www.sap.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 7.1

VulDB Base Score: 7.1
VulDB Temp Score: 7.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.1
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/15/2017 🔍
12/11/2018 +361 days 🔍
12/11/2018 +0 days 🔍
12/11/2018 +0 days 🔍
12/12/2018 +1 days 🔍
12/12/2018 +0 days 🔍
04/20/2020 +495 days 🔍

Sourcesinfo

Vendor: sap.com

Advisory: securityfocus.com⛔
Status: Not defined

CVE: CVE-2018-2492 (🔍)
GCVE (CVE): GCVE-0-2018-2492
GCVE (VulDB): GCVE-100-127871
SecurityFocus: 106153 - SAP NetWeaver AS Java CVE-2018-2492 XML External Entity Injection Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20150716

Entryinfo

Created: 12/12/2018 09:26
Updated: 04/20/2020 11:09
Changes: 12/12/2018 09:26 (59), 04/20/2020 11:09 (3)
Complete: 🔍
Cache ID: 216::103