CVE-2015-6393 Denial of service in n/a

What is CVE-2015-6393?

CVE-2015-6393 is a high-severity denial of service vulnerability in Cisco Nx-Os, published on 6 Oct 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Cisco NX-OS 4.1 through 7.3 and 11.0 through 11.2 on Nexus 2000, 3000, 3500, 5000, 5500, 5600, 6000, 7000, 7700, and 9000 devices allows remote attackers to cause a denial of service (device crash) via malformed IPv4 DHCP packets to the DHCPv4 relay agent, aka Bug IDs CSCuq39250, CSCus21733, CSCus21739, CSCut76171, and CSCux67182.

Weakness: CWE-399

Which versions are affected by CVE-2015-6393?

It affects 1 product.

Products include Cisco Nx-Os.

How do I fix CVE-2015-6393?

No fix has been published for CVE-2015-6393 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-2015-6393 being exploited?

There is no known exploitation of CVE-2015-6393 in the wild and no public exploit code.

Other vulnerabilities in Cisco Nx-Os

• CVE-2024-20399 Cisco NX-OS Command Injection Exploited Medium 6.0
• CVE-2021-1361 Cisco NX-OS Software Unauthenticated Arbitrary File Actions Vulnerability Critical 9.8
• CVE-2018-0301 Memory corruption in Cisco NX-OS unknown Critical 9.8
• CVE-2016-1453 Memory corruption in n/a Critical 9.8
• CVE-2016-1341 Hardcoded credentials in n/a Critical 9.8

All Cisco Nx-Os vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-rvx7-fx4g-cj44.