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High severity7.5NVD Advisory· Published Oct 27, 2016· Updated Jun 17, 2026

CVE-2016-6439

CVE-2016-6439

Description

A vulnerability in the detection engine reassembly of HTTP packets for Cisco Firepower System Software before 6.0.1 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to the Snort process unexpectedly restarting. The vulnerability is due to improper handling of an HTTP packet stream. An attacker could exploit this vulnerability by sending a crafted HTTP packet stream to the detection engine on the targeted device. An exploit could allow the attacker to cause a DoS condition if the Snort process restarts and traffic inspection is bypassed or traffic is dropped.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

25
  • Cisco Systems, Inc./Secure Firewall Management Center24 versions
    cpe:2.3:a:cisco:secure_firewall_management_center:5.3.0:*:*:*:*:*:*:*+ 23 more
    • cpe:2.3:a:cisco:secure_firewall_management_center:5.3.0:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:5.3.0.2:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:5.3.0.3:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:5.3.0.4:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:5.3.1:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:5.3.1.3:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:5.3.1.4:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:5.3.1.5:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:5.3.1.6:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:5.4.0:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:5.4.0.2:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:5.4.1:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:5.4.1.1:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:5.4.1.2:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:5.4.1.3:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:5.4.1.4:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:5.4.1.5:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:5.4.1.6:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:5.4_base:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:6.0.0:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:6.0.0.0:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:6.0.0.1:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:6.0.1:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:secure_firewall_management_center:6.0_base:*:*:*:*:*:*:*
  • Cisco Systems, Inc./Firepower System Softwarellm-fuzzy
    Range: <6.0.1

Patches

Vulnerability mechanics

References

3

News mentions

0

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