Vulnerability in Cisco Wide Area Application Services

CVE-2017-6628

A vulnerability in SMART-SSL Accelerator functionality for Cisco Wide Area Application Services (WAAS) 6.2.1, 6.2.1a, and 6.2.3a could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition where the WAN optimization could stop functioning while the process restarts. The vulnerability is due to a Secure Sockets Layer/Transport Layer Security (SSL/TLS) alert being incorrectly handled when in a specific SSL/TLS connection state. An attacker could exploit this vulnerability by establishing a SMART-SSL connection through the targeted device. The attacker would then send a crafted stream of SSL/TLS traffic. An exploit could allow the attacker to cause a DoS condition where WAN optimization could stop processing traffic for a short period of time. Cisco Bug IDs: CSCvb71133.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.017 (76.1th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.1% 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-2017-6628: held from 0.017 to 0.017.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

  • Cisco Wide Area Application Services — versions 6.2.1, 6.2.1a, 6.2.3a
  • Cisco Wide Area Application Services Smart-Ssl Accelerator — versions Cisco Wide Area Application Services SMART-SSL Accelerator

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2017-6628?
CVE-2017-6628 is a medium-severity vulnerability in Cisco Wide Area Application Services, classified under CWE-399. CVSS score: 6.8/10. Published 2017-05-03.
How severe is CVE-2017-6628?
Medium severity. CVSS v3 base score is 6.8 out of 10.