7.1
HIGH
CVE-2020-16877
Windows Elevation of Privilege Vulnerability
Description

<p>An elevation of privilege vulnerability exists when Microsoft Windows improperly handles reparse points. An attacker who successfully exploited this vulnerability could overwrite or delete a targeted file that would normally require elevated permissions.</p> <p>To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and overwrite or delete files.</p> <p>The security update addresses the vulnerability by correcting how Windows handles reparse points.</p>

INFO

Published Date :

Oct. 16, 2020, 11:15 p.m.

Last Modified :

Dec. 31, 2023, 8:15 p.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

5.2

Exploitability Score :

1.8
Public PoC/Exploit Available at Github

CVE-2020-16877 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2020-16877 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Microsoft windows_10
2 Microsoft windows_server_2016
3 Microsoft windows_10_1809
4 Microsoft windows_10_1909
5 Microsoft windows_server_1903
6 Microsoft windows_server_1909
7 Microsoft windows_server_2004
: Total Affected Vendor : 1 | Products : 7
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-16877.

URL Resource
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16877 Patch Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
alphaSeclab/sec-daily-2020

2020年发布到阿尔法实验室微信公众号的所有安全资讯汇总

Updated: 3 weeks, 2 days ago
40 stars 16 fork 16 watcher
Born at : Jan. 11, 2021, 2:08 a.m. This repo has been linked 189 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-16877 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-16877 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Dec. 31, 2023

    Action Type Old Value New Value
    Changed Description An elevation of privilege vulnerability exists when Microsoft Windows improperly handles reparse points, aka 'Windows Elevation of Privilege Vulnerability'. <p>An elevation of privilege vulnerability exists when Microsoft Windows improperly handles reparse points. An attacker who successfully exploited this vulnerability could overwrite or delete a targeted file that would normally require elevated permissions.</p> <p>To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and overwrite or delete files.</p> <p>The security update addresses the vulnerability by correcting how Windows handles reparse points.</p>
    Added CVSS V3.1 Microsoft Corporation AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
  • CWE Remap by [email protected]

    Jul. 21, 2021

    Action Type Old Value New Value
    Changed CWE CWE-269 NVD-CWE-noinfo
  • Initial Analysis by [email protected]

    Oct. 22, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:P/A:P)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
    Changed Reference Type https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16877 No Types Assigned https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16877 Patch, Vendor Advisory
    Added CWE NIST CWE-269
    Added CPE Configuration OR *cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:1909:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-16877 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-16877 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} -0.07%

score

0.07227

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: