5.9
MEDIUM
CVE-2021-43767
PostgreSQL Odissy Man-in-the-Middle Certificate Verification Bypass
Description

Odyssey passes to client unencrypted bytes from man-in-the-middle When Odyssey storage is configured to use the PostgreSQL server using 'trust' authentication with a 'clientcert' requirement or to use 'cert' authentication, a man-in-the-middle attacker can inject false responses to the client's first few queries. Despite the use of SSL certificate verification and encryption, Odyssey will pass these results to client as if they originated from valid server. This is similar to CVE-2021-23222 for PostgreSQL.

INFO

Published Date :

Aug. 25, 2022, 6:15 p.m.

Last Modified :

Nov. 7, 2023, 3:39 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.2
Affected Products

The following products are affected by CVE-2021-43767 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 Postgresql postgresql
1 Odyssey_project odyssey
: Total Affected Vendor : 2 | Products : 2
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-2021-43767.

URL Resource
https://github.com/yandex/odyssey/issues/377%2C
https://www.postgresql.org/support/security/CVE-2021-23222/ Not Applicable 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-2021-43767 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-43767 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]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Fedora Project https://github.com/yandex/odyssey/issues/377%2C [No types assigned]
    Removed Reference Fedora Project https://github.com/yandex/odyssey/issues/377,
  • CVE Source Update by [email protected]

    Dec. 21, 2022

    Action Type Old Value New Value
    Changed CVE Elastic Fedora Project
  • Initial Analysis by [email protected]

    Aug. 31, 2022

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
    Changed Reference Type https://github.com/yandex/odyssey/issues/377, No Types Assigned https://github.com/yandex/odyssey/issues/377, Broken Link
    Changed Reference Type https://www.postgresql.org/support/security/CVE-2021-23222/ No Types Assigned https://www.postgresql.org/support/security/CVE-2021-23222/ Not Applicable, Vendor Advisory
    Added CWE NIST CWE-295
    Added CPE Configuration OR *cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:* versions from (including) 9.6.0 up to (excluding) 9.6.24 *cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:* versions from (including) 10.0 up to (excluding) 10.19 *cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:* versions from (including) 11.0 up to (excluding) 11.14 *cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:* versions from (including) 12.0 up to (excluding) 12.9 *cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:* versions from (including) 13.0 up to (excluding) 13.5 *cpe:2.3:a:postgresql:postgresql:14.0:*:*:*:*:*:*:*
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-2021-43767 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-2021-43767 weaknesses.

CAPEC-459: Creating a Rogue Certification Authority Certificate Creating a Rogue Certification Authority Certificate CAPEC-475: Signature Spoofing by Improper Validation Signature Spoofing by Improper Validation CAPEC-50: Password Recovery Exploitation Password Recovery Exploitation CAPEC-102: Session Sidejacking Session Sidejacking CAPEC-474: Signature Spoofing by Key Theft Signature Spoofing by Key Theft CAPEC-509: Kerberoasting Kerberoasting CAPEC-551: Modify Existing Service Modify Existing Service CAPEC-555: Remote Services with Stolen Credentials Remote Services with Stolen Credentials CAPEC-560: Use of Known Domain Credentials Use of Known Domain Credentials CAPEC-561: Windows Admin Shares with Stolen Credentials Windows Admin Shares with Stolen Credentials CAPEC-600: Credential Stuffing Credential Stuffing CAPEC-644: Use of Captured Hashes (Pass The Hash) Use of Captured Hashes (Pass The Hash) CAPEC-645: Use of Captured Tickets (Pass The Ticket) Use of Captured Tickets (Pass The Ticket) CAPEC-652: Use of Known Kerberos Credentials Use of Known Kerberos Credentials CAPEC-653: Use of Known Operating System Credentials Use of Known Operating System Credentials
Exploit Prediction

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

0.05 }} 0.00%

score

0.18207

percentile

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