CVE-2021-22538
Google Exposure Notification Verification Server Privilege Escalation Vulnerability
Description
A privilege escalation vulnerability impacting the Google Exposure Notification Verification Server (versions prior to 0.23.1), allows an attacker who (1) has UserWrite permissions and (2) is using a carefully crafted request or malicious proxy, to create another user with higher privileges than their own. This occurs due to insufficient checks on the allowed set of permissions. The new user creation event would be captured in the Event Log.
INFO
Published Date :
March 31, 2021, 9:15 p.m.
Last Modified :
April 6, 2021, 2:11 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
2.8
Affected Products
The following products are affected by CVE-2021-22538
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.
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-2021-22538
.
URL | Resource |
---|---|
https://github.com/google/exposure-notifications-verification-server/commit/eb8cf40b12dbe79304f1133c06fb73419383cd95 | Patch Third Party Advisory |
https://github.com/google/exposure-notifications-verification-server/releases/tag/v0.23.1 | Release Notes Third Party Advisory |
https://github.com/google/exposure-notifications-verification-server/releases/tag/v0.24.0 | Release Notes Third Party Advisory |
https://github.com/google/exposure-notifications-verification-server/security/advisories/GHSA-5v95-v8c8-3rh6 | 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-2021-22538
vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-22538
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]
Apr. 06, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/google/exposure-notifications-verification-server/commit/eb8cf40b12dbe79304f1133c06fb73419383cd95 No Types Assigned https://github.com/google/exposure-notifications-verification-server/commit/eb8cf40b12dbe79304f1133c06fb73419383cd95 Patch, Third Party Advisory Changed Reference Type https://github.com/google/exposure-notifications-verification-server/releases/tag/v0.23.1 No Types Assigned https://github.com/google/exposure-notifications-verification-server/releases/tag/v0.23.1 Release Notes, Third Party Advisory Changed Reference Type https://github.com/google/exposure-notifications-verification-server/releases/tag/v0.24.0 No Types Assigned https://github.com/google/exposure-notifications-verification-server/releases/tag/v0.24.0 Release Notes, Third Party Advisory Changed Reference Type https://github.com/google/exposure-notifications-verification-server/security/advisories/GHSA-5v95-v8c8-3rh6 No Types Assigned https://github.com/google/exposure-notifications-verification-server/security/advisories/GHSA-5v95-v8c8-3rh6 Third Party Advisory Added CWE NIST CWE-276 Added CPE Configuration OR *cpe:2.3:a:google:exposure_notifications_verification_server:*:*:*:*:*:*:*:* versions up to (excluding) 0.23.1
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-22538
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-2021-22538
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.26 }} 0.08%
score
0.65984
percentile