Critical

PHP Object Injection in AlienVault OSSIM/USM <5.3.2

IdentifiersCVE-2016-8580CWE-502

CVE-2016-8580 is a PHP object injection vulnerability affecting multiple widget files in AlienVault OSSIM and USM prior to version 5.3.2. The vulnerability arises from insecure use of the unserialize() function on user-supplied input, allowing attackers to instantiate arbitrary PHP objects. By leveraging magic methods in included classes, an attacker can achieve arbitrary PHP code execution. This vulnerability can be exploited in conjunction with other flaws, such as authentication bypass and SQL injection, to fully compromise the affected system.

For your environment

Are you exposed to this one?

Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.

Start free trial

ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows remote attackers to execute arbitrary PHP code on the AlienVault OSSIM/USM host, leading to full system compromise. When chained with authentication bypass and SQL injection vulnerabilities, attackers can extract sensitive data (password hashes, session tokens), hijack sessions, and ultimately gain root shell access, resulting in a complete takeover of the security management platform.

Mitigation

If you can’t patch tonight, do this now.

If immediate upgrade is not possible, restrict access to the affected endpoints, implement strong input validation and sanitization, and deploy web application firewalls with rules to block suspicious serialized payloads. Monitor for exploitation attempts and review logs for signs of compromise.

Remediation

Patch, then assume compromise.

Upgrade AlienVault OSSIM/USM to version 5.3.5 or later, where the vulnerable unserialize() usage has been patched. Ensure all public access to outdated versions is removed. Review and update all custom code to avoid unsafe deserialization of user input.

PUBLIC EXPLOITS

Exploits

No valid public exploits. Mallory filtered out 2 candidates as fakes, detection scripts, or README-only repos.

VALID 0 / 2 TOTALView more in app

All candidate exploits were filtered out by Mallory's validation.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

AlienvaultOpen Source Security Information And Event Managementapplication

AlienvaultUnified Security Managementapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

No public activity tracked yet. Mallory keeps watching.

0 SOURCESView more in app

No public activity observed for this vulnerability.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

Start free trial

Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity