VulnerabilityModified

CVE-2017-6791

HIGH 7.5EPSS 2.32%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (2.32%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A vulnerability in the Trust Verification Service (TVS) of Cisco Unified Communications Manager could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper handling of Transport Layer Security (TLS) traffic by the affected software. An attacker could exploit this vulnerability by generating incomplete traffic streams. A successful exploit could allow the attacker to deny access to the TVS for an affected device, resulting in a DoS condition, until an administrator restarts the service. Known Affected Releases 10.0(1.10000.24) 10.5(2.10000.5) 11.0(1.10000.10) 9.1(2.10000.28). Cisco Bug IDs: CSCux21905.

CVSS 3.0: 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 2.32% probability · 83th percentile
CISA KEV: Not listed
Weakness: CWE-119
Affected: cisco/unified communications manager
Source: psirt@cisco.com

References

http://www.securityfocus.com/bid/100662Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039286Third Party Advisory, VDB Entry
https://quickview.cloudapps.cisco.com/quickview/bug/CSCux21905Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170906-ucmVendor Advisory
http://www.securityfocus.com/bid/100662Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039286Third Party Advisory, VDB Entry
https://quickview.cloudapps.cisco.com/quickview/bug/CSCux21905Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170906-ucmVendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.