TI-2019-01304 Aliases CVE-2019-1678 GHSA-xvgf-4x2w-f753

Cisco Meeting Server Denial of Service Vulnerability

LOW 23CWE-20Published 2019-02-07 · Updated 2024-11-21

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · None · Low
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A vulnerability in Cisco Meeting Server could allow an authenticated, remote attacker to cause a partial denial of service (DoS) to Cisco Meetings application users who are paired with a Session Initiation Protocol (SIP) endpoint. The vulnerability is due to improper validation of coSpaces configuration parameters. An attacker could exploit this vulnerability by inserting crafted strings in specific coSpace parameters. An exploit could allow the attacker to prevent clients from joining a conference call in the affected coSpace. Versions prior to 2.4.3 are affected.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01358 71st percentileScored 2026-11-07

Fix Fixed Cisco Meeting Server (Cisco): 2.4.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Cisco	Cisco Meeting Server	before 2.4.3	2.4.3	Patch available	CNA

Cisco Meeting Server VendorCisco Affected before 2.4.3 Fixed in 2.4.3 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:cisco:meeting_server:2.3.6:::::::*	2.3.6	Vulnerable	Cisco

cpe:2.3:a:cisco:meeting_server:2.3.6:*:*:*:*:*:*:* Versions 2.3.6 Vulnerable ·Cisco

Remediation

Fix · CNA Cisco Meeting Server (Cisco) Fixed in 2.4.3

Timeline

2026-10-02 Threatist record created from CVE-2019-1678
2026-10-03 Alias added: GHSA-xvgf-4x2w-f753

References

Advisory 1

20190206 Cisco Meeting Server Denial of Service Vulnerability

TI-2016-05530 Memory corruption in Cisco Meeting Server before 2.0.3 and Acano Server before 1.9.5 CVSS 3.0CRITICAL 9.8
TI-2016-05529 Memory corruption in Cisco Meeting Server before 2.0.1, Acano Server before 1.9.3, Cisco… CVSS 3.0CRITICAL 9.8
TI-2018-00239 Improper input validation in Cisco Meeting Server Media Services CVSS 3.0HIGH 7.5
TI-2017-09025 Exposure of resource to wrong sphere in Cisco Meeting Server CVSS 3.0CRITICAL 9.1
TI-2018-00222 A vulnerability in Cisco Meeting Server could allow an unauthenticated, remote attacker… CVSS 3.0HIGH 8.1
TI-2016-05527 Improper input validation in Cisco Meeting Server before 2.0.6 and Acano Server before… CVSS 3.0CRITICAL 9.1

See all 30 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences