CVE-2023-42135: a50 Injection — Exploit

Description

PAX A920Pro/A50 devices with PayDroid_8.1.0_Sagittarius_V11.1.50_20230614 or earlier can allow local code execution via parameter injection by bypassing the input validation when flashing a specific partition. The attacker must have physical USB access to the device in order to exploit this vulnerability.

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CVSS v3.1 Score

6.8

MEDIUM

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-74 CWE-74

Affected Products

Vendor	Product	Versions
paxtechnology	paydroid	< 8.1.0_sagittarius_11.1.50_20230614
paxtechnology	a920_pro	All
paxtechnology	paydroid	< 8.1.0_sagittarius_11.1.50_20230614
paxtechnology	a50	All

References

Exploits

https://blog.stmcyber.com/pax-pos-cves-2023/ https://blog.stmcyber.com/pax-pos-cves-2023/

Other References

https://cert.pl/en/posts/2024/01/CVE-2023-4818/ https://cert.pl/posts/2024/01/CVE-2023-4818/ https://ppn.paxengine.com/release/development https://cert.pl/en/posts/2024/01/CVE-2023-4818/ https://cert.pl/posts/2024/01/CVE-2023-4818/ https://ppn.paxengine.com/release/development

Frequently Asked Questions

What is CVE-2023-42135? +

PAX A920Pro/A50 devices with PayDroid_8.1.0_Sagittarius_V11.1.50_20230614 or earlier can allow local code execution via parameter injection by bypassing the input validation when flashing a specific partition. The attacker must have physical USB access to the device in order to exploit this vulnerability. It has a CVSS v3.1 base score of 6.8 (MEDIUM).

How severe is CVE-2023-42135? +

CVE-2023-42135 has a CVSS v3.1 score of 6.8 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-42135? +

CVE-2023-42135 affects products from paxtechnology, specifically: a50, a920_pro, paydroid. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-42135? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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