7.2
HIGH
CVE-2020-29299
Zyxel VPN Products Command Injection Vulnerability
Description

Certain Zyxel products allow command injection by an admin via an input string to chg_exp_pwd during a password-change action. This affects VPN On-premise before ZLD V4.39 week38, VPN Orchestrator before SD-OS V10.03 week32, USG before ZLD V4.39 week38, USG FLEX before ZLD V4.55 week38, ATP before ZLD V4.55 week38, and NSG before 1.33 patch 4.

INFO

Published Date :

Dec. 27, 2020, 6:15 a.m.

Last Modified :

Nov. 21, 2024, 5:23 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

1.2
Affected Products

The following products are affected by CVE-2020-29299 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 Zyxel vpn_orchestrator
2 Zyxel zld
3 Zyxel nsg_firmware
4 Zyxel usg_flex_firmware
5 Zyxel usg_flex
6 Zyxel atp
7 Zyxel nsg
: 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-2020-29299.

URL Resource
https://www.zyxel.com/support/Zyxel-security-advisory-for-command-injection-vulnerability-of-firewalls.shtml Vendor Advisory
https://www.zyxel.com/us/en/support/security_advisories.shtml Vendor Advisory
https://www.zyxel.com/support/Zyxel-security-advisory-for-command-injection-vulnerability-of-firewalls.shtml Vendor Advisory
https://www.zyxel.com/us/en/support/security_advisories.shtml 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).

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

The following list is the news that have been mention CVE-2020-29299 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-29299 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 af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://www.zyxel.com/support/Zyxel-security-advisory-for-command-injection-vulnerability-of-firewalls.shtml
    Added Reference https://www.zyxel.com/us/en/support/security_advisories.shtml
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Jan. 05, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://www.zyxel.com/support/Zyxel-security-advisory-for-command-injection-vulnerability-of-firewalls.shtml No Types Assigned https://www.zyxel.com/support/Zyxel-security-advisory-for-command-injection-vulnerability-of-firewalls.shtml Vendor Advisory
    Changed Reference Type https://www.zyxel.com/us/en/support/security_advisories.shtml No Types Assigned https://www.zyxel.com/us/en/support/security_advisories.shtml Vendor Advisory
    Added CWE NIST CWE-77
    Added CPE Configuration OR *cpe:2.3:o:zyxel:vpn_orchestrator:*:*:*:*:*:*:*:* versions up to (excluding) 10.03 *cpe:2.3:o:zyxel:zld:*:*:*:*:*:*:*:* versions up to (excluding) 4.39
    Added CPE Configuration AND OR *cpe:2.3:o:zyxel:zld:*:*:*:*:*:*:*:* versions up to (excluding) 4.55 OR cpe:2.3:h:zyxel:usg_flex:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:zyxel:zld:*:*:*:*:*:*:*:* versions up to (excluding) 4.55 OR cpe:2.3:h:zyxel:atp:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:zyxel:nsg_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.33 *cpe:2.3:o:zyxel:nsg_firmware:1.33:-:*:*:*:*:*:* *cpe:2.3:o:zyxel:nsg_firmware:1.33:patch1:*:*:*:*:*:* OR cpe:2.3:h:zyxel:nsg:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:zyxel:usg_flex_firmware:-:*:*:*:*:*:*:* *cpe:2.3:o:zyxel:zld:*:*:*:*:*:*:*:* versions up to (excluding) 4.39 OR cpe:2.3:h:zyxel:usg_flex:-:*:*:*:*:*:*:*
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-2020-29299 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-2020-29299 weaknesses.

Exploit Prediction

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

0.12 }} 0.04%

score

0.45938

percentile

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