VDB-99894 · CVE-2017-7696 · GCVE-0-2017-7696

SAP AS JAVA SSO Authentication Library up to 3.0 qr width/height resource management

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 was found in SAP AS JAVA SSO Authentication Library up to 3.0 and classified as problematic. This vulnerability affects unknown code of the file otp_logon_ui_resources/qr. The manipulation of the argument width/height results in resource management. This vulnerability is cataloged as CVE-2017-7696. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in SAP AS JAVA SSO Authentication Library up to 3.0 (Software Library). Affected is an unknown code of the file otp_logon_ui_resources/qr. The manipulation of the argument width/height with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. CVE summarizes:

SAP AS JAVA SSO Authentication Library 2.0 through 3.0 allow remote attackers to cause a denial of service (memory consumption) via large values in the width and height parameters to otp_logon_ui_resources/qr, aka SAP Security Note 2389042.

The bug was discovered 01/10/2017. The weakness was shared 04/14/2017 (Website). The advisory is available at erpscan.com. This vulnerability is traded as CVE-2017-7696 since 04/11/2017. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/31/2020).

The vulnerability was handled as a non-public zero-day exploit for at least 94 days. During that time the estimated underground price was around $5k-$25k.

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

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Productinfo

Type

Software Library

Vendor

Name

AS JAVA SSO Authentication Library

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: 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
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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: Resource management
CWE: CWE-399 / 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

01/10/2017 🔍
04/11/2017 +91 days 🔍
04/14/2017 +3 days 🔍
04/14/2017 +0 days 🔍
04/15/2017 +1 days 🔍
08/31/2020 +1234 days 🔍

Sourcesinfo

Vendor: sap.com

Advisory: erpscan.com
Status: Not defined

CVE: CVE-2017-7696 (🔍)
GCVE (CVE): GCVE-0-2017-7696
GCVE (VulDB): GCVE-100-99894
OSVDB: - CVE-2017-7696 - SAP - SSO Authentication Library - Denial of Service Issue

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

Entryinfo

Created: 04/15/2017 15:32
Updated: 08/31/2020 14:45
Changes: 04/15/2017 15:32 (58), 08/31/2020 14:45 (2)
Complete: 🔍
Cache ID: 216::103