CVE-2021-47703: openbmcs SSRF — Exploit

Description

OpenBMCS 2.4 contains an unauthenticated SSRF vulnerability that allows attackers to bypass firewalls and initiate service and network enumeration on the internal network through the affected application, allowing hijacking of current sessions. Attackers can specify an external domain in the 'ip' parameter to force the application to make an HTTP request to an arbitrary destination host.

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CVSS v3.1 Score

7.2

HIGH

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

Weakness Type (CWE)

CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Vendor	Product	Versions
openbmcs	openbmcs	All

References

Exploits

https://www.exploit-db.com/exploits/50670 https://www.zeroscience.mk/en/vulnerabilities/ZSL-2022-5694.php

Other References

https://www.openbmcs.com https://www.vulncheck.com/advisories/openbmcs-server-side-request-forgery-ssrf-via-phpqueryphp

Frequently Asked Questions

What is CVE-2021-47703? +

OpenBMCS 2.4 contains an unauthenticated SSRF vulnerability that allows attackers to bypass firewalls and initiate service and network enumeration on the internal network through the affected application, allowing hijacking of current sessions. Attackers can specify an external domain in the 'ip' parameter to force the application to make an HTTP request to an arbitrary destination host. It has a CVSS v3.1 base score of 7.2 (HIGH).

How severe is CVE-2021-47703? +

CVE-2021-47703 has a CVSS v3.1 score of 7.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2021-47703? +

CVE-2021-47703 affects products from openbmcs, specifically: openbmcs. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2021-47703? +

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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CVE-2021-47703