Resource management flaw in Cisco Wide Area Application Services SMART-SSL Accelerator
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Cisco Wide Area Application Services SMART-SSL Accelerator | Cisco Wide Area Application Services SMART-SSL Accelerator | — | No fix listed | CNA |
- Cisco Wide Area Application Services SMART-SSL Accelerator Vendor— Affected Cisco Wide Area Application Services SMART-SSL Accelerator Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:wide_area_application_services:6.2.1:*:*:*:*:*:*:* | 6.2.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:wide_area_application_services:6.2.1a:*:*:*:*:*:*:* | 6.2.1a | Vulnerable | Cisco |
| cpe:2.3:a:cisco:wide_area_application_services:6.2.3a:*:*:*:*:*:*:* | 6.2.3a | Vulnerable | Cisco |
- cpe:2.3:a:cisco:wide_area_application_services:6.2.1:*:*:*:*:*:*:* Versions 6.2.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:wide_area_application_services:6.2.1a:*:*:*:*:*:*:* Versions 6.2.1a Vulnerable ·Cisco
- cpe:2.3:a:cisco:wide_area_application_services:6.2.3a:*:*:*:*:*:*:* Versions 6.2.3a Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-6628
- 2026-10-03 Alias added: GHSA-cx3x-jr7v-gvm8
References
More Cisco Wide Area Application Services vulnerabilities
- TI-2013-03008 The web service framework in Cisco WAAS Software 4.x and 5.x before 5.0.3e, 5.1.x before… CVSS 2.0HIGH 10.0
- TI-2013-03009 The web framework in Cisco WAAS Software before 4.x and 5.x before 5.0.3e, 5.1.x before… CVSS 2.0HIGH 9.0
- TI-2014-01739 Cisco Wide Area Application Services (WAAS) 5.1.1 before 5.1.1e, when SharePoint prefetch… CVSS 2.0HIGH 9.3
- TI-2007-03800 The Common Internet File System (CIFS) optimization in Cisco Wide Area Application… CVSS 2.0HIGH 7.8
- TI-2015-05404 cifs-ao in the CIFS optimization functionality on Cisco Wide Area Application Service… CVSS 3.0HIGH 7.5
- TI-2018-00288 Hard-coded credentials in Cisco Wide Area Application Services unknown CVSS 3.1MEDIUM 5.3
Sources
- CVE-2017-6628 · CVE Program
- CVE-2017-6628 · NVD
- FIRST EPSS
- GHSA-cx3x-jr7v-gvm8 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences