# CVE-2017-12244: Denial of service in Cisco Firepower Detection Engine > Remote attackers can cause denial of service in Cisco Firepower devices by sending malicious IPv6 packets, requiring file action policies to be configured. - **Severity:** High 8.6 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** No - **Published:** 5 Oct 2017 - **Updated:** 5 Aug 2024 - **Also known as:** GHSA-q7x3-rqf6-q2hj ## What is CVE-2017-12244? CVE-2017-12244 is a high-severity denial of service vulnerability in Cisco Secure Firewall Management Center, published on 5 Oct 2017. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description A vulnerability in the detection engine parsing of IPv6 packets for Cisco Firepower System Software could allow an unauthenticated, remote attacker to cause high CPU utilization or to cause a denial of service (DoS) condition because the Snort process restarts unexpectedly. The vulnerability is due to improper input validation of the fields in the IPv6 extension header packet. An attacker could exploit this vulnerability by sending a malicious IPv6 packet 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. This vulnerability is specific to IPv6 traffic only. This vulnerability affects Cisco Firepower System Software Releases 6.0 and later when the software has one or more file action policies configured and is running on any of the following Cisco products: 3000 Series Industrial Security Appliances (ISR), Adaptive Security Appliance (ASA) 5500-X Series with FirePOWER Services, Adaptive Security Appliance (ASA) 5500-X Series Next-Generation Firewalls, Advanced Malware Protection (AMP) for Networks, 7000 Series Appliances, Advanced Malware Protection (AMP) for Networks, 8000 Series Appliances, FirePOWER 7000 Series Appliances, FirePOWER 8000 Series Appliances, Firepower Threat Defense for Integrated Services Routers (ISRs), Firepower 2100 Series Security Appliances, Firepower 4100 Series Security Appliances, Firepower 9300 Series Security Appliances, Virtual Next-Generation Intrusion Prevention System (NGIPSv) for VMware. Cisco Bug IDs: CSCvd34776. Weakness: CWE-20 (Improper Input Validation) ## Which versions are affected by CVE-2017-12244? It affects 1 product. Products: Cisco Secure Firewall Management Center. ## How do I fix CVE-2017-12244? No fix has been published for CVE-2017-12244 yet. Limit exposure of the affected software until one is available. ## Is CVE-2017-12244 being exploited? There is no known exploitation of CVE-2017-12244 in the wild and no public exploit code. ## Other vulnerabilities in Cisco Secure Firewall Management Center - [CVE-2026-20079](https://insights.sbomify.com/CVE-2026-20079/): Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel (critical 10.0, exploited in the wild) - [CVE-2026-20131](https://insights.sbomify.com/CVE-2026-20131/): Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management Deserialization of Untrusted Data (critical 10.0, exploited in the wild) - [CVE-2026-20316](https://insights.sbomify.com/CVE-2026-20316/): Cisco Secure Firewall Management Center Use of Hard-coded Password (medium 5.3, exploited in the wild) - [CVE-2025-20265](https://insights.sbomify.com/CVE-2025-20265/): Cisco Secure Firewall Management Center Software Radius Remote Code Execution Vulnerability (critical 10.0) - [CVE-2024-20424](https://insights.sbomify.com/CVE-2024-20424/): Command injection in Cisco Firepower Management Center (critical 9.9) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2017-12244 and fix it if it is affected. What it is: CVE-2017-12244 is a high-severity denial of service vulnerability in Cisco Secure Firewall Management Center, published on 5 Oct 2017. An attacker can exploit it over the internet without logging in, with no action from the victim. Exploitation: There is no known exploitation of CVE-2017-12244 in the wild and no public exploit code. Affected product: Cisco Secure Firewall Management Center. No package-level version data is available, so check the vendor advisory linked from the reference page. Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2017-12244/ (Markdown: https://insights.sbomify.com/CVE-2017-12244/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2017-12244 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-12244 - OSV: https://osv.dev/vulnerability/CVE-2017-12244 --- From sbomify Insights: https://insights.sbomify.com/CVE-2017-12244/ Summaries are generated and may contain mistakes; the official description above is the record.