HighPublic exploit

Stack Buffer Overflow in FSD and FSFDT FSD

IdentifiersCVE-2007-5256CWE-121

CVE-2007-5256 describes multiple stack-based buffer overflows in FSD 2.052 d9 and earlier, and FSFDT FSD 3.000 d9 and earlier. The vulnerabilities exist in the sysuser::exechelp function in sysuser.cc, which is exposed via the HELP command on TCP port 3010, and in the servinterface::sendmulticast function in servinterface.cc, which is accessible via commands such as PIcallsign on TCP port 6809. These overflows allow remote attackers (in the case of the HELP command) and remote authenticated users (in the case of the multicast command) to execute arbitrary code on the affected system.

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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 code with the privileges of the FSD process. This can lead to full system compromise, data theft, or use of the system as a pivot point for further attacks. The attack on port 3010 can be performed without authentication, while the attack on port 6809 requires authentication.

Mitigation

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

Restrict network access to TCP ports 3010 and 6809 to trusted hosts only, and monitor for suspicious or unusually long commands sent to these ports. Employ network intrusion detection systems to detect exploitation attempts. Where possible, use application-level input validation to prevent buffer overflows.

Remediation

Patch, then assume compromise.

Upgrade to a version of FSD or FSFDT FSD that has patched the buffer overflow vulnerabilities in sysuser::exechelp and servinterface::sendmulticast. If no patched version is available, consider disabling the affected services or restricting access to the vulnerable ports.

PUBLIC EXPLOITS

Exploits

No valid public exploits. Mallory filtered out 3 candidates as fakes, detection scripts, or README-only repos.

VALID 0 / 3 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

McduFsdapplication

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.

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Exposure mapping

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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