Intrusion Prevention

Mozilla.Firefox.WebAssembly.Table.Integer.Underflow

Description

This indicates an attack attempt to exploit a Integer Underflow Vulnerability in Mozilla Foundation Firefox ESR.
The vulnerability is due to an error in the vulnerable application when handling a maliciously crafted response. A remote attacker may be able to exploit this by tricking a user to visit a malicious web page and execute arbitrary code within the context of the application.

Affected Products

Mozilla Foundation Firefox prior to 58.0
Mozilla Foundation Firefox ESR prior to 52.6

Impact

System Compromise: Remote attackers can gain control of vulnerable systems.

Recommended Actions

Apply the most recent upgrade or patch from the vendor:
https://www.mozilla.org/en-US/security/advisories/mfsa2018-02/#CVE-2018-5093

CVE References

CVE-2018-5093