6.3
MEDIUM
CVE-2022-23628
Open Policy Agent Pretty Printing Reordering Attack
Description

OPA is an open source, general-purpose policy engine. Under certain conditions, pretty-printing an abstract syntax tree (AST) that contains synthetic nodes could change the logic of some statements by reordering array literals. Example of policies impacted are those that parse and compare web paths. **All of these** three conditions have to be met to create an adverse effect: 1. An AST of Rego had to be **created programmatically** such that it ends up containing terms without a location (such as wildcard variables). 2. The AST had to be **pretty-printed** using the `github.com/open-policy-agent/opa/format` package. 3. The result of the pretty-printing had to be **parsed and evaluated again** via an OPA instance using the bundles, or the Golang packages. If any of these three conditions are not met, you are not affected. Notably, all three would be true if using **optimized bundles**, i.e. bundles created with `opa build -O=1` or higher. In that case, the optimizer would fulfil condition (1.), the result of that would be pretty-printed when writing the bundle to disk, fulfilling (2.). When the bundle was then used, we'd satisfy (3.). As a workaround users may disable optimization when creating bundles.

INFO

Published Date :

Feb. 9, 2022, 10:15 p.m.

Last Modified :

Feb. 17, 2022, 2:37 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.4

Exploitability Score :

2.8
Public PoC/Exploit Available at Github

CVE-2022-23628 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2022-23628 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 Openpolicyagent open_policy_agent
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-2022-23628.

URL Resource
https://github.com/open-policy-agent/opa/commit/932e4ffc37a590ace79e9b75ca4340288c220239 Patch Third Party Advisory
https://github.com/open-policy-agent/opa/commit/bfd984ddf93ef2c4963a08d4fdadae0bcf1a3717 Patch Third Party Advisory
https://github.com/open-policy-agent/opa/pull/3851 Issue Tracking Patch Third Party Advisory
https://github.com/open-policy-agent/opa/security/advisories/GHSA-hcw3-j74m-qc58 Exploit Patch 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).

test 反向辣鸡数据投放 CVE-2022-23305 工具 利用 教程 Exploit POC

cve-2020-

Updated: 2 years ago
5 stars 2 fork 2 watcher
Born at : Jan. 21, 2022, 5:07 a.m. This repo has been linked 2608 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2022-23628 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2022-23628 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]

    Feb. 17, 2022

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
    Changed Reference Type https://github.com/open-policy-agent/opa/commit/932e4ffc37a590ace79e9b75ca4340288c220239 No Types Assigned https://github.com/open-policy-agent/opa/commit/932e4ffc37a590ace79e9b75ca4340288c220239 Patch, Third Party Advisory
    Changed Reference Type https://github.com/open-policy-agent/opa/commit/bfd984ddf93ef2c4963a08d4fdadae0bcf1a3717 No Types Assigned https://github.com/open-policy-agent/opa/commit/bfd984ddf93ef2c4963a08d4fdadae0bcf1a3717 Patch, Third Party Advisory
    Changed Reference Type https://github.com/open-policy-agent/opa/pull/3851 No Types Assigned https://github.com/open-policy-agent/opa/pull/3851 Issue Tracking, Patch, Third Party Advisory
    Changed Reference Type https://github.com/open-policy-agent/opa/security/advisories/GHSA-hcw3-j74m-qc58 No Types Assigned https://github.com/open-policy-agent/opa/security/advisories/GHSA-hcw3-j74m-qc58 Exploit, Patch, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:openpolicyagent:open_policy_agent:*:*:*:*:*:*:*:* versions from (including) 0.33.1 up to (excluding) 0.37.0
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-2022-23628 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-2022-23628 weaknesses.

Exploit Prediction

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

0.16 }} 0.02%

score

0.53442

percentile

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