External risk intelligence

Broadcom RAID Controller Privilege Escalation via Log File Session Prints.

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2023-4340

The vulnerability affects a RAID controller web interface. Web interfaces for hardware management are commonly deployed as network-accessible services to facilitate remote administration, making them plausibly reachable in many deployment scenarios where edge or management access is required.

Privilege Escalation

Broadcom Raid Controller Web Interface

51.12.0-2779

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical vulnerability has been identified in Broadcom RAID controller web interfaces, stemming from how session information is logged. This could allow unauthorized access and elevated privileges if exploited. The main concern is confirming relevance and exposure within your environment.

Session logging flaw in RAID controllers.
Potential for unauthorized privilege escalation.
Verify if this controller type is in use.

Attack Path

How an attacker could exploit the issue

An attacker could potentially gain elevated privileges on a Broadcom RAID controller by exploiting a flaw related to session information logged to a file. This would allow an unauthenticated attacker to access sensitive system functions.

Unauthenticated network access is required.
Session details in log files are exploited.
Privilege escalation leading to system compromise.

Live Threat

Current exploitation, exposure, and threat context

A privilege escalation vulnerability in the Broadcom RAID Controller's web interface could allow an unauthenticated attacker to gain administrative control over the system by exploiting how session information is logged. This could lead to unauthorized access and modification of the RAID controller's configuration and data.

RAID controller configuration data at risk.
Exploits session logging flaws.
Unauthenticated administrative access.

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability impacts Broadcom RAID controller web interfaces, likely managed by infrastructure or platform teams responsible for storage hardware. The initial action is to locate all instances of the affected technology, assess their external reachability and business criticality, and identify the specific system owner before planning remediation.

Infrastructure or Platform teams own remediation.
Verify external reachability and criticality.
Plan remediation based on assessed risk.

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 the Broadcom RAID Controller web interface?

This software provides a graphical dashboard for managing storage hardware, such as configuring disk arrays and monitoring drive health. It acts as a bridge between administrators and the underlying RAID controller firmware, allowing users to perform complex storage maintenance tasks through a standard web browser.

How does CVE-2023-4340 lead to privilege escalation?

The vulnerability involves improper handling of session information within log files. Because the application writes sensitive session details to these logs, an attacker can access the files to capture or impersonate valid user sessions. This bypasses authentication mechanisms, granting the attacker the same elevated administrative privileges as a legitimate system manager.

Do I need to be authenticated to trigger this flaw?

No. The vulnerability does not require prior authentication or valid credentials to be triggered. If an attacker can reach the web interface over the network, they can attempt to exploit the log file session data. The bug is not triggered by normal administrative actions, but rather by the specific, insecure way the system writes session metadata to logs.

Is my RAID controller at risk if it is not on the internet?

Halo Surface Signal indicates this vulnerability is likely relevant because many RAID web interfaces are deployed as network-accessible management services. While internet-facing controllers face the highest risk, any controller reachable from your internal network may be targeted if an attacker gains a foothold elsewhere in your environment.

When should I prioritize addressing this vulnerability?

You should prioritize this by first identifying where these controllers are deployed across your infrastructure. Determine if they are accessible from untrusted networks, and identify the team responsible for their hardware management. Once mapped, coordinate with those owners to review vendor-provided security updates or configuration changes to mitigate the risk.

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.