9.8
CRITICAL
CVE-2023-52077
Nexkey Miskey: External App Token Privilege Escalation Vulnerability
Description

Nexkey is a lightweight fork of Misskey v12 optimized for small to medium size servers. Prior to 12.23Q4.5, Nexkey allows external apps using tokens issued by administrators and moderators to call admin APIs. This allows malicious third-party apps to perform operations such as updating server settings, as well as compromise object storage and email server credentials. This issue has been patched in 12.23Q4.5.

INFO

Published Date :

Dec. 27, 2023, 7:15 p.m.

Last Modified :

Jan. 4, 2024, 11:11 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2023-52077 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 Nexryai nexkey
References to Advisories, Solutions, and Tools

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-2023-52077 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-52077 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
  • Initial Analysis by [email protected]

    Jan. 04, 2024

    Action Type Old Value New Value
    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://github.com/mei23/misskey-v12/commit/78173e376f14fcc1987b02196f5538bf5b18225c No Types Assigned https://github.com/mei23/misskey-v12/commit/78173e376f14fcc1987b02196f5538bf5b18225c Patch
    Changed Reference Type https://github.com/misskey-dev/misskey/commit/5150053275594278e9eb23e72d98b16593c4c230 No Types Assigned https://github.com/misskey-dev/misskey/commit/5150053275594278e9eb23e72d98b16593c4c230 Patch
    Changed Reference Type https://github.com/nexryai/nexkey/commit/a4e4c9c47c5f84ec7ccd309bde59d4ae5d7e5a98 No Types Assigned https://github.com/nexryai/nexkey/commit/a4e4c9c47c5f84ec7ccd309bde59d4ae5d7e5a98 Patch
    Changed Reference Type https://github.com/nexryai/nexkey/security/advisories/GHSA-pjj7-7hcj-9cpc No Types Assigned https://github.com/nexryai/nexkey/security/advisories/GHSA-pjj7-7hcj-9cpc Vendor Advisory
    Added CPE Configuration OR *cpe:2.3:a:nexryai:nexkey:*:*:*:*:*:node.js:*:* versions up to (excluding) 12.23q4.5
  • CVE Received by [email protected]

    Dec. 27, 2023

    Action Type Old Value New Value
    Added Description Nexkey is a lightweight fork of Misskey v12 optimized for small to medium size servers. Prior to 12.23Q4.5, Nexkey allows external apps using tokens issued by administrators and moderators to call admin APIs. This allows malicious third-party apps to perform operations such as updating server settings, as well as compromise object storage and email server credentials. This issue has been patched in 12.23Q4.5.
    Added Reference GitHub, Inc. https://github.com/nexryai/nexkey/security/advisories/GHSA-pjj7-7hcj-9cpc [No types assigned]
    Added Reference GitHub, Inc. https://github.com/mei23/misskey-v12/commit/78173e376f14fcc1987b02196f5538bf5b18225c [No types assigned]
    Added Reference GitHub, Inc. https://github.com/misskey-dev/misskey/commit/5150053275594278e9eb23e72d98b16593c4c230 [No types assigned]
    Added Reference GitHub, Inc. https://github.com/nexryai/nexkey/commit/a4e4c9c47c5f84ec7ccd309bde59d4ae5d7e5a98 [No types assigned]
    Added CWE GitHub, Inc. CWE-863
    Added CVSS V3.1 GitHub, Inc. AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L
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-2023-52077 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-2023-52077 weaknesses.

Exploit Prediction

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

0.07 }} 0.02%

score

0.28018

percentile

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