9.8
CRITICAL
CVE-2021-36767
Digi RealPort Hash Cracking Vulnerability
Description

In Digi RealPort through 4.10.490, authentication relies on a challenge-response mechanism that gives access to the server password, making the protection ineffective. An attacker may send an unauthenticated request to the server. The server will reply with a weakly-hashed version of the server's access password. The attacker may then crack this hash offline in order to successfully login to the server.

INFO

Published Date :

Oct. 8, 2021, 3:15 p.m.

Last Modified :

Sept. 25, 2023, 2:30 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-36767 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 Digi realport
2 Digi connectport_ts_8\/16_firmware
3 Digi connectport_lts_8\/16\/32_firmware
4 Digi passport_integrated_console_server_firmware
5 Digi cm_firmware
6 Digi portserver_ts_firmware
7 Digi portserver_ts_mei_firmware
8 Digi portserver_ts_mei_hardened_firmware
9 Digi portserver_ts_m_mei_firmware
10 Digi 6350-sr_firmware
11 Digi portserver_ts_p_mei_firmware
12 Digi transport_wr11_xt_firmware
13 Digi one_ia_firmware
14 Digi wr31_firmware
15 Digi wr44_r_firmware
16 Digi connect_es_firmware
17 Digi wr21_firmware
18 Digi one_iap_firmware
19 Digi one_iap_haz_firmware
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-2021-36767.

URL Resource
https://raw.githubusercontent.com/reidmefirst/vuln-disclosure/main/2021-02.txt Third Party 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-2021-36767 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-36767 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
  • Reanalysis by [email protected]

    Sep. 25, 2023

    Action Type Old Value New Value
    Removed CPE Configuration AND OR *cpe:2.3:o:digi:connectcore_8x_sbc_pro_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:connectcore_8x_sbc_pro:-:*:*:*:*:*:*:*
    Removed CPE Configuration AND OR *cpe:2.3:o:digi:connectcore_8x_som_dualxz_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:connectcore_8x_som_dualxz:-:*:*:*:*:*:*:*
    Removed CPE Configuration AND OR *cpe:2.3:o:digi:connectcore_8x_som_quadxplus_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:connectcore_8x_som_quadxplus:-:*:*:*:*:*:*:*
  • Reanalysis by [email protected]

    May. 26, 2023

    Action Type Old Value New Value
    Removed CPE Configuration AND OR *cpe:2.3:o:digi:connectcore_8x_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:connectcore_8x:-:*:*:*:*:*:*:*
  • Modified Analysis by [email protected]

    Apr. 29, 2022

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:digi:realport:*:*:*:*:*:linux:*:* versions up to (including) 1.9-40 *cpe:2.3:a:digi:realport:*:*:*:*:*:windows:*:* versions up to (including) 4.8.488.0 OR *cpe:2.3:a:digi:realport:*:*:*:*:*:linux:*:* versions up to (including) 1.9-40 *cpe:2.3:a:digi:realport:*:*:*:*:*:windows:*:* versions up to (including) 4.10.490
  • CVE Modified by [email protected]

    Jan. 01, 2022

    Action Type Old Value New Value
    Changed Description In Digi RealPort through 4.8.488.0, authentication relies on a challenge-response mechanism that gives access to the server password, making the protection ineffective. An attacker may send an unauthenticated request to the server. The server will reply with a weakly-hashed version of the server's access password. The attacker may then crack this hash offline in order to successfully login to the server. In Digi RealPort through 4.10.490, authentication relies on a challenge-response mechanism that gives access to the server password, making the protection ineffective. An attacker may send an unauthenticated request to the server. The server will reply with a weakly-hashed version of the server's access password. The attacker may then crack this hash offline in order to successfully login to the server.
  • Initial Analysis by [email protected]

    Oct. 19, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://raw.githubusercontent.com/reidmefirst/vuln-disclosure/main/2021-02.txt No Types Assigned https://raw.githubusercontent.com/reidmefirst/vuln-disclosure/main/2021-02.txt Third Party Advisory
    Added CWE NIST CWE-916
    Added CPE Configuration OR *cpe:2.3:a:digi:realport:*:*:*:*:*:linux:*:* versions up to (including) 1.9-40 *cpe:2.3:a:digi:realport:*:*:*:*:*:windows:*:* versions up to (including) 4.8.488.0
    Added CPE Configuration AND OR *cpe:2.3:o:digi:connectport_ts_8\/16_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:connectport_ts_8\/16:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:connectport_lts_8\/16\/32_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:connectport_lts_8\/16\/32:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:passport_integrated_console_server_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:passport_integrated_console_server:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:cm_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:cm:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:portserver_ts_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:portserver_ts:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:portserver_ts_mei_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:portserver_ts_mei:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:portserver_ts_mei_hardened_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:portserver_ts_mei_hardened:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:portserver_ts_m_mei_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:portserver_ts_m_mei:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:6350-sr_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:6350-sr:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:portserver_ts_p_mei_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:portserver_ts_p_mei:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:transport_wr11_xt_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:transport_wr11_xt:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:one_ia_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:one_ia:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:wr31_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:wr31:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:wr44_r_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:wr44_r:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:connect_es_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:connect_es:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:wr21_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:wr21:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:connectcore_8x_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:connectcore_8x:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:one_iap_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:one_iap:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:one_iap_haz_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:one_iap_haz:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:connectcore_8x_sbc_pro_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:connectcore_8x_sbc_pro:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:connectcore_8x_som_dualxz_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:connectcore_8x_som_dualxz:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:digi:connectcore_8x_som_quadxplus_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:digi:connectcore_8x_som_quadxplus:-:*:*:*:*:*:*:*
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-2021-36767 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-2021-36767 weaknesses.

Exploit Prediction

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

0.16 }} 0.01%

score

0.52184

percentile

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