Buffer overflow in Cisco Unified Communications Manager
CVE-2017-6791
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.
Vulnerability class: Buffer Overflow
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: 0.023 (83.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000
Affected products
- Cisco Unified Communications Manager — versions 9.1(2.10000.28), 10.5(2.10000.5), 10.5\(2.10000.5\)
- Cisco Unified Communications Manager — versions Cisco Unified Communications Manager
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170906… (Vendor Advisory)
- www.securitytracker.com/id/1039286 (VDB Entry, Third Party Advisory, vdb-entry)
- quickview.cloudapps.cisco.com/quickview/bug/CSCux21905 (Vendor Advisory)
- www.securityfocus.com/bid/100662 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2017-6791?
- CVE-2017-6791 is a high-severity vulnerability in Cisco Unified Communications Manager, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2017-09-07.
- How severe is CVE-2017-6791?
- High severity. CVSS v3 base score is 7.5 out of 10.