CVE-2016-6467 Denial of service in Cisco Aggregation Services Router (ASR) 5000 Series Switch

What is CVE-2016-6467?

CVE-2016-6467 is a high-severity denial of service vulnerability in Cisco Aggregation Services Router (ASR) 5000 Series Switch, published on 14 Dec 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in IPv6 packet fragment reassembly of StarOS for Cisco Aggregation Services Router (ASR) 5000 Series Switch could allow an unauthenticated, remote attacker to cause an unexpected reload of the Network Processing Unit (NPU) process. More Information: CSCva84552. Known Affected Releases: 20.0.0 21.0.0 21.0.M0.64702. Known Fixed Releases: 21.0.0 21.0.0.65256 21.0.M0.64970 21.0.V0.65150 21.1.A0.64973 21.1.PP0.65270 21.1.R0.65130 21.1.R0.65135 21.1.VC0.65203.

Weakness: CWE-399

Which versions are affected by CVE-2016-6467?

It affects 1 product.

Products include Cisco Asr 5000 Series Software.

How do I fix CVE-2016-6467?

No fix has been published for CVE-2016-6467 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-2016-6467 being exploited?

There is no known exploitation of CVE-2016-6467 in the wild and no public exploit code.

Other vulnerabilities in Cisco Aggregation Services Router (ASR) 5000 Series Switch

• CVE-2017-3819 Privilege escalation in Cisco StarOS High 8.8
• CVE-2017-6612 Open redirect in Cisco ASR 5000 Series Aggregation Services Routers High 8.6
• CVE-2017-6672 Security feature bypass in Cisco ASR 5000 Series Aggregation Services Routers High 7.5
• CVE-2016-9203 Denial of service in Cisco ASR 5000 High 7.5
• CVE-2016-6466 Denial of service in Cisco StarOS 20.0.0 through 21.0.M0.64246 High 7.5

Sources

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

Also known as GHSA-3m3c-3279-wprv.