CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
7.6 | $0-$5k | 0.00 |
A vulnerability classified as critical was found in Microsoft Skype (Unified Communication Software) (the affected version unknown). This vulnerability affects an unknown part in the library msi.dll/dpapi.dll/cryptui.dll of the component Installer. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability.
The weakness was disclosed 09/27/2016 as not defined mailinglist post (Full-Disclosure). The advisory is available at seclists.org. The vendor was not involved in the coordination of the public release. This vulnerability was named CVE-2016-5720 since 06/16/2016. The exploitation appears to be easy. Local access is required to approach this attack. A single authentication is necessary for exploitation. Technical details and also a public exploit are known. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.
A public exploit has been developed in Binary and been published immediately after the advisory. It is possible to download the exploit at mega.nz. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The code used by the exploit is:
1. Download this dll https://mega.nz/#!b4ViSLJL!Pv99pN2d_WxsUHGPH0Ej3onwVeSdh41mpyKfQJfAq8E 2. Copy msi.dll to Downloads directory 3. download skype installer 4. execute the downloaded installer from your "Downloads" directory; Observed behavior: message box “hyhy”
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
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: 7.8VulDB Meta Temp Score: 7.6
VulDB Base Score: 7.8
VulDB Temp Score: 7.4
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.8
NVD Vector: 🔍
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: 🔍
NVD Base Score: 🔍
Exploiting
Class: Access controlCWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍
Local: Yes
Remote: No
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
OpenVAS ID: 804587
OpenVAS Name: Microsoft Skype DLL Hijacking Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Exploit Delay Time: 🔍
Timeline
06/16/2016 🔍09/27/2016 🔍
09/27/2016 🔍
09/29/2016 🔍
01/23/2017 🔍
01/27/2017 🔍
09/21/2022 🔍
Sources
Vendor: microsoft.comAdvisory: seclists.org
Status: Not defined
CVE: CVE-2016-5720 (🔍)
SecurityFocus: 95859 - Skype for Windows CVE-2016-5720 Untrusted Search Path vulnerability
scip Labs: https://www.scip.ch/en/?labs.20140918
Entry
Created: 09/29/2016 15:42Updated: 09/21/2022 14:45
Changes: 09/29/2016 15:42 (60), 04/27/2019 18:02 (11), 09/21/2022 14:45 (3)
Complete: 🔍
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