Microsoft Windows Media Center xml external entity reference

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 (≈)
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CTI Interest Score
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3.8$0-$5k0.00

A vulnerability was found in Microsoft Windows (Operating System) (version unknown) and classified as problematic. Affected by this issue is an unknown function of the component Media Center. The manipulation with an unknown input leads to a xml external entity reference vulnerability. Using CWE to declare the problem leads to CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. Impacted is confidentiality, integrity, and availability.

The weakness was shared 12/02/2019 by John Page (hyp3rlinx) (Website). The advisory is shared for download at hyp3rlinx.altervista.org. The vendor cooperated in the coordination of the public release. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are unknown but a public exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 12/10/2019).

A public exploit has been developed by John Page (hyp3rlinx) and been published immediately after the advisory. The exploit is available at hyp3rlinx.altervista.org. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1093 days. During that time the estimated underground price was around $25k-$100k.

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

Productinfo

Type

Vendor

Name

License

Video

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CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.8

VulDB Base Score: 4.3
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Xml external entity reference
CWE: CWE-611 / CWE-610
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: John Page (hyp3rlinx)
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

12/04/2016 🔍
12/02/2019 +1093 days 🔍
12/02/2019 +0 days 🔍
12/10/2019 +8 days 🔍
12/10/2019 +0 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: hyp3rlinx.altervista.org
Researcher: John Page (hyp3rlinx)
Status: Not defined
Coordinated: 🔍
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 12/10/2019 07:05
Updated: 12/10/2019 07:10
Changes: 12/10/2019 07:05 (48), 12/10/2019 07:10 (2)
Complete: 🔍
Submitter: hyp3rlinx

Submitinfo

Accepted

  • Submit #130: Microsoft Windows Media Center XXE MotW Bypass (Anniversary Edition) (by hyp3rlinx)

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