CVE-2023-30845
ESPv2 JWT Authentication Bypass Vulnerability
Description
ESPv2 is a service proxy that provides API management capabilities using Google Service Infrastructure. ESPv2 2.20.0 through 2.42.0 contains an authentication bypass vulnerability. API clients can craft a malicious `X-HTTP-Method-Override` header value to bypass JWT authentication in specific cases. ESPv2 allows malicious requests to bypass authentication if both the conditions are true: The requested HTTP method is **not** in the API service definition (OpenAPI spec or gRPC `google.api.http` proto annotations, and the specified `X-HTTP-Method-Override` is a valid HTTP method in the API service definition. ESPv2 will forward the request to your backend without checking the JWT. Attackers can craft requests with a malicious `X-HTTP-Method-Override` value that allows them to bypass specifying JWTs. Restricting API access with API keys works as intended and is not affected by this vulnerability. Upgrade deployments to release v2.43.0 or higher to receive a patch. This release ensures that JWT authentication occurs, even when the caller specifies `x-http-method-override`. `x-http-method-override` is still supported by v2.43.0+. API clients can continue sending this header to ESPv2.
INFO
Published Date :
April 26, 2023, 9:15 p.m.
Last Modified :
May 9, 2023, 4:08 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2023-30845 has a 3 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2023-30845.
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).
读过的安全文章离线归档 | begin in 2023.11.23
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C
Explore CVE 2023-30845 automatically across multiple subdomains
Shell
This BurpSuite extension tests ESPv2 malicious X-HTTP-Method-Override header value to bypass JWT authentication in specific cases.
burp-extensions burpsuite cve-2023-30845 espv2 montoya-api
Kotlin
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-30845 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-30845 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.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
May. 09, 2023
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/GoogleCloudPlatform/esp-v2/commit/0bcdfc024ce96b34db4e1b4f2211b509d9be93cd No Types Assigned https://github.com/GoogleCloudPlatform/esp-v2/commit/0bcdfc024ce96b34db4e1b4f2211b509d9be93cd Patch Changed Reference Type https://github.com/GoogleCloudPlatform/esp-v2/commit/e95670146f5e96bb5565b0a9c1e153886b3e04ce No Types Assigned https://github.com/GoogleCloudPlatform/esp-v2/commit/e95670146f5e96bb5565b0a9c1e153886b3e04ce Patch Changed Reference Type https://github.com/GoogleCloudPlatform/esp-v2/commit/e98061ee4527a564506ba4e814c0ecf324dc2c6f No Types Assigned https://github.com/GoogleCloudPlatform/esp-v2/commit/e98061ee4527a564506ba4e814c0ecf324dc2c6f Patch Changed Reference Type https://github.com/GoogleCloudPlatform/esp-v2/security/advisories/GHSA-6qmp-9p95-fc5f No Types Assigned https://github.com/GoogleCloudPlatform/esp-v2/security/advisories/GHSA-6qmp-9p95-fc5f Vendor Advisory Added CPE Configuration OR *cpe:2.3:a:google:espv2:*:*:*:*:*:*:*:* versions from (including) 2.20.0 up to (excluding) 2.43.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-30845 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-2023-30845
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.09 }} -0.00%
score
0.39922
percentile