CVE-2022-31807: sipass integrated Signature Bypass

Description

A vulnerability has been identified in Building X - Security Manager Edge Controller (ACC-AP) (All versions). Affected devices do not properly check the integrity of firmware updates. This could allow a local attacker to upload a maliciously modified firmware onto the device. In a second scenario, a remote attacker who is able to intercept the transfer of a valid firmware from the server to the device could modify the firmware "on the fly".

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CVSS v3.1 Score

6.2

MEDIUM

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

Weakness Type (CWE)

CWE-347 CWE-347

Affected Products

Vendor	Product	Versions
siemens	sipass_integrated_ac5102_\(acc-g2\)_firmware	All
siemens	sipass_integrated_ac5102_\(acc-g2\)	All
siemens	sipass_integrated_acc-ap_firmware	All
siemens	sipass_integrated_acc-ap	All

References

Advisories & Patches

https://cert-portal.siemens.com/productcert/html/ssa-367714.html

Other References

https://cert-portal.siemens.com/productcert/html/ssa-420375.html

Frequently Asked Questions

What is CVE-2022-31807? +

A vulnerability has been identified in Building X - Security Manager Edge Controller (ACC-AP) (All versions). Affected devices do not properly check the integrity of firmware updates. This could allow a local attacker to upload a maliciously modified firmware onto the device. In a second scenario, a remote attacker who is able to intercept the transfer of a valid firmware from the server to the device could modify the firmware "on the fly". It has a CVSS v3.1 base score of 6.2 (MEDIUM).

How severe is CVE-2022-31807? +

CVE-2022-31807 has a CVSS v3.1 score of 6.2 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-2022-31807? +

CVE-2022-31807 affects products from siemens, specifically: sipass_integrated_ac5102_\(acc-g2\), sipass_integrated_ac5102_\(acc-g2\)_firmware, sipass_integrated_acc-ap, sipass_integrated_acc-ap_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2022-31807? +

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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