CVE-2021-43795
Armeria Local File System Path Traversal Vulnerability
Description
Armeria is an open source microservice framework. In affected versions an attacker can access an Armeria server's local file system beyond its restricted directory by sending an HTTP request whose path contains `%2F` (encoded `/`), such as `/files/..%2Fsecrets.txt`, bypassing Armeria's path validation logic. Armeria 1.13.4 or above contains the hardened path validation logic that handles `%2F` properly. This vulnerability can be worked around by inserting a decorator that performs an additional validation on the request path.
INFO
Published Date :
Dec. 2, 2021, 6:15 p.m.
Last Modified :
Dec. 6, 2021, 6:24 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
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-2021-43795.
| URL | Resource |
|---|---|
| https://github.com/line/armeria/commit/e2697a575e9df6692b423e02d731f293c1313284 | Patch Third Party Advisory |
| https://github.com/line/armeria/pull/3855 | Third Party Advisory |
| https://github.com/line/armeria/security/advisories/GHSA-8fp4-rp6c-5gcv | 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).
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The following list is the news that have been mention
CVE-2021-43795 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-43795 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]
Dec. 06, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:N/A:N) Changed Reference Type https://github.com/line/armeria/commit/e2697a575e9df6692b423e02d731f293c1313284 No Types Assigned https://github.com/line/armeria/commit/e2697a575e9df6692b423e02d731f293c1313284 Patch, Third Party Advisory Changed Reference Type https://github.com/line/armeria/pull/3855 No Types Assigned https://github.com/line/armeria/pull/3855 Third Party Advisory Changed Reference Type https://github.com/line/armeria/security/advisories/GHSA-8fp4-rp6c-5gcv No Types Assigned https://github.com/line/armeria/security/advisories/GHSA-8fp4-rp6c-5gcv Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:linecorp:armeria:*:*:*:*:*:*:*:* versions up to (excluding) 1.13.4
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-43795 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-2021-43795
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.18 }} 0.02%
score
0.56032
percentile