External risk intelligence

OpenSSL RSA Memory Corruption Leading to Remote Code Execution

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2022-2274

This vulnerability affects OpenSSL, a foundational library widely used in SSL/TLS servers to handle public-facing encrypted traffic. Because these servers are designed to be internet-accessible to facilitate secure communication for web traffic and API endpoints, the vulnerable RSA implementation is commonly exposed at the public internet edge in standard deployments.

Out-of-bounds Write

Openssl

3.0.4

Halo Surface Signal: 5 out of 5 — more likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A recent bug in OpenSSL's RSA implementation on specific processors can lead to memory corruption and potential remote code execution. This impacts SSL/TLS and other servers using 2048-bit RSA private keys on affected hardware. The primary concern is to confirm if these systems are in use and potentially exposed.

Bug in RSA encryption may allow code execution.
Affects critical infrastructure, potentially internet-facing.
Assess exposure to ensure system integrity.

Attack Path

How an attacker could exploit the issue

An attacker could target servers using OpenSSL with 2048-bit RSA private keys on specific CPUs. By sending specially crafted network traffic, they might trigger a bug in the RSA computation, leading to memory corruption that could allow remote code execution.

Network access required.
Vulnerable RSA computation.
Remote code execution risk.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could impact SSL/TLS servers and other services using 2048-bit RSA private keys on systems with specific CPU instructions. Memory corruption during RSA computation may lead to remote code execution, affecting the integrity and availability of the affected services.

Server RSA keys and computation integrity at risk.
Memory corruption may enable remote code execution.
Potential for service disruption and compromise.

Operational Fix

Recommended remediation, mitigation, and detection steps

Teams responsible for network-facing systems, application infrastructure, and platform services should prioritize addressing this critical vulnerability. The immediate first step is to identify all instances of the affected OpenSSL library, determine their exposure and business criticality, and then assign ownership for remediation planning.

Infrastructure and platform teams own the resolution.
Verify affected systems and their exposure.
Plan remediation based on risk assessment.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is OpenSSL and its role in this security issue?

OpenSSL is a foundational software library that provides cryptographic functions for applications. It is widely used to secure network communications, such as SSL/TLS for web traffic. This vulnerability specifically affects how OpenSSL 3.0.4 performs RSA calculations on processors that support the AVX512IFMA instruction set, making the cryptographic implementation itself unreliable.

What is the nature of the vulnerability in CVE-2022-2274?

This flaw is classified as CWE-787, or out-of-bounds write. In simpler terms, it is a memory corruption bug. When the software processes 2048-bit RSA keys on specific hardware, it incorrectly manages system memory. This can overwrite data in memory, which an attacker might manipulate to force the server to execute unauthorized commands, a risk known as remote code execution.

How can an attacker trigger this memory corruption?

An attacker triggers this by sending specially crafted network traffic to a service that utilizes the vulnerable OpenSSL RSA implementation. It is important to note that the issue is specific to the combination of the 3.0.4 library version, the use of 2048-bit RSA keys, and processors with AVX512IFMA support. If your hardware lacks these specific CPU instructions, this particular trigger path is not applicable.

Why does Halo Surface Signal categorize this as an external risk?

Halo Surface Signal flags this as a high-priority external risk because OpenSSL is frequently deployed at the internet edge to handle encrypted web and API traffic. Since these servers are intentionally reachable from the public internet to facilitate secure connections, they are directly accessible to potential attackers, significantly increasing the probability that an attempt could be made to exploit the memory corruption.

What is the first step to address this CVE?

The priority is to identify where OpenSSL 3.0.4 is currently in use across your environment. Once identified, cross-reference these instances with hardware that supports the AVX512IFMA instruction set and uses 2048-bit RSA keys. After locating these specific assets, coordinate with your infrastructure and platform teams to establish ownership and plan for necessary updates or configuration changes.

References

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.