CVE-2024-23636: sofarpc Insecure Deserialization — Fix

Description

SOFARPC is a Java RPC framework. SOFARPC defaults to using the SOFA Hessian protocol to deserialize received data, while the SOFA Hessian protocol uses a blacklist mechanism to restrict deserialization of potentially dangerous classes for security protection. But, prior to version 5.12.0, there is a gadget chain that can bypass the SOFA Hessian blacklist protection mechanism, and this gadget chain only relies on JDK and does not rely on any third-party components. Version 5.12.0 fixed this issue by adding a blacklist. SOFARPC also provides a way to add additional blacklists. Users can add a class like `-Drpc_serialize_blacklist_override=org.apache.xpath.` to avoid this issue.

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CVSS v3.1 Score

9.8

CRITICAL

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

Weakness Type (CWE)

CWE-502 Deserialization of Untrusted Data

Affected Products

Vendor	Product	Versions
sofastack	sofarpc	< 5.12.0

References

Advisories & Patches

https://github.com/sofastack/sofa-rpc/commit/42d19b1b1d14a25aafd9ef7c219c04a19f90fc76 https://github.com/sofastack/sofa-rpc/security/advisories/GHSA-7q8p-9953-pxvr https://github.com/sofastack/sofa-rpc/commit/42d19b1b1d14a25aafd9ef7c219c04a19f90fc76 https://github.com/sofastack/sofa-rpc/security/advisories/GHSA-7q8p-9953-pxvr

Frequently Asked Questions

What is CVE-2024-23636? +

SOFARPC is a Java RPC framework. SOFARPC defaults to using the SOFA Hessian protocol to deserialize received data, while the SOFA Hessian protocol uses a blacklist mechanism to restrict deserialization of potentially dangerous classes for security protection. But, prior to version 5.12.0, there is a gadget chain that can bypass the SOFA Hessian blacklist protection mechanism, and this gadget chain only relies on JDK and does not rely on any third-party components. Version 5.12.0 fixed this issue by adding a blacklist. SOFARPC also provides a way to add additional blacklists. Users can add a class like `-Drpc_serialize_blacklist_override=org.apache.xpath.` to avoid this issue. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2024-23636? +

CVE-2024-23636 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2024-23636? +

CVE-2024-23636 affects products from sofastack, specifically: sofarpc. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-23636? +

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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