VDB-186353 · CVE-2021-42021 · ssa-755517

Siemens Siveillance Video DLNA Server up to 2021 R1 path traversal

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.
5.3	$5k-$25k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in Siemens Siveillance Video DLNA Server up to 2021 R1. This affects an unknown part. The manipulation leads to path traversal. This vulnerability is listed as CVE-2021-42021. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Siemens Siveillance Video DLNA Server up to 2021 R1. It has been rated as problematic. This issue affects some unknown processing. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-23. The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory. Impacted is confidentiality.

The weakness was presented 11/09/2021 as ssa-755517. The advisory is shared at cert-portal.siemens.com. The identification of this vulnerability is CVE-2021-42021 since 10/06/2021. 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 11/09/2021). MITRE ATT&CK project uses the attack technique T1006 for this issue.

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

Vendor

Siemens

Name

Siveillance Video DLNA Server

Version

License

commercial

Website

Vendor: https://www.siemens.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

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

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: 🔍

Exploitinginfo

Class: Path traversal
CWE: CWE-23 / CWE-22
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

10/06/2021 🔍
11/09/2021 +34 days 🔍
11/09/2021 +0 days 🔍
11/11/2021 +2 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-755517
Status: Confirmed

CVE: CVE-2021-42021 (🔍)
GCVE (CVE): GCVE-0-2021-42021
GCVE (VulDB): GCVE-100-186353

Entryinfo

Created: 11/09/2021 14:54
Updated: 11/11/2021 17:34
Changes: 11/09/2021 14:54 (37), 11/11/2021 17:26 (1), 11/11/2021 17:34 (1)
Complete: 🔍
Cache ID: 216::103