CVE-2013-6704 Denial of service in n/a
Remote attackers can cause a denial of service via memory consumption in Cisco IOS XE by sending malicious TFTP traffic.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2013-6704?
CVE-2013-6704 is a high-severity denial of service vulnerability in Cisco Ios Xe, published on 3 Dec 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Cisco IOS XE does not properly manage memory for TFTP UDP flows, which allows remote attackers to cause a denial of service (memory consumption) via TFTP (1) client or (2) server traffic, aka Bug IDs CSCuh09324 and CSCty42686.
Weakness: CWE-399
Which versions are affected by CVE-2013-6704?
It affects 1 product.
Products include Cisco Ios Xe.
How do I fix CVE-2013-6704?
No fix has been published for CVE-2013-6704 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2013-6704 being exploited?
There is no known exploitation of CVE-2013-6704 in the wild and no public exploit code.
Other vulnerabilities in Cisco Ios Xe
- CVE-2023-20198 Cisco IOS XE Web UI Privilege Escalation
- CVE-2018-0151 Cisco IOS Software and Cisco IOS XE Software Quality of Service Remote Code Execution
- CVE-2023-20273 Cisco IOS XE Web UI Command Injection
- CVE-2025-20188 Hardcoded credentials in Cisco IOS XE Software
- CVE-2021-34770 Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Remote Code Execution Vulnerability
Sources
Also known as GHSA-42g2-v9pm-6w57.