Resource exhaustion in Cisco Remote Expert Manager

CVE-2017-6641

A vulnerability in the TCP connection handling functionality of Cisco Remote Expert Manager Software 11.0.0 could allow an unauthenticated, remote attacker to disable TCP ports and cause a denial of service (DoS) condition on an affected system. The vulnerability is due to a lack of rate-limiting functionality in the TCP Listen application of the affected software. An attacker could exploit this vulnerability by sending a crafted TCP traffic stream in which specific types of TCP packets are flooded to an affected device, for example a TCP packet stream in which the TCP FIN bit is set in all the TCP packets. A successful exploit could allow the attacker to cause certain TCP listening ports on the affected system to stop accepting incoming connections for a period of time or until the affected device is restarted, resulting in a DoS condition. In addition, system resources, such as CPU and memory, could be exhausted during the attack. Cisco Bug IDs: CSCva29806.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.024 (83.4th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2017-6641: held from 0.023 to 0.024.

EPSS over last 30 days · oldest: 0.023 · newest: 0.024 · change: +0.001

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2017-6641?
CVE-2017-6641 is a high-severity vulnerability in Cisco Remote Expert Manager, classified under CWE-399. CVSS score: 7.5/10. Published 2017-05-22.
How severe is CVE-2017-6641?
High severity. CVSS v3 base score is 7.5 out of 10.