CVE-2020-3244 Cisco ASR 5000 Series Aggregation Services Routers Enhanced Charging Service Rule Bypass Vulnerability

What is CVE-2020-3244?

CVE-2020-3244 is a medium-severity vulnerability in Cisco ASR 5000 Series Software, published on 18 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the Enhanced Charging Service (ECS) functionality of Cisco ASR 5000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass the traffic classification rules on an affected device. The vulnerability is due to insufficient input validation of user traffic going through an affected device. An attacker could exploit this vulnerability by sending a malformed HTTP request to an affected device. A successful exploit could allow the attacker to bypass the traffic classification rules and potentially avoid being charged for traffic consumption.

Weakness: CWE-20

Which versions are affected by CVE-2020-3244?

It affects 1 product.

Products include Cisco Staros.

How do I fix CVE-2020-3244?

No fix has been published for CVE-2020-3244 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-3244 being exploited?

There is no known exploitation of CVE-2020-3244 in the wild and no public exploit code.

Other vulnerabilities in Cisco ASR 5000 Series Software

• CVE-2023-20046 Auth bypass in Cisco ASR 5000 Series Software High 8.8
• CVE-2019-1869 Cisco StarOS Denial of Service Vulnerability High 8.6
• CVE-2018-0369 Denial of service in Cisco StarOS unknown High 8.6
• CVE-2017-6707 Command injection in Cisco StarOS High 8.2
• CVE-2021-1539 Cisco ASR 5000 Series Software Authorization Bypass Vulnerabilities High 8.1

Sources

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

Also known as GHSA-mp76-mqjp-pxx7.