CVE-2019-1676 Cisco Meeting Server SIP Processing Denial of Service Vulnerability
Unauthenticated remote attackers can cause a denial of service by sending crafted SDP messages to Cisco Meeting Server, requiring an upgrade to mitigate.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-1676?
CVE-2019-1676 is a medium-severity denial of service vulnerability in Cisco Meeting Server, published on 8 Feb 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the Session Initiation Protocol (SIP) call processing of Cisco Meeting Server (CMS) software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition of the Cisco Meeting Server. The vulnerability is due to insufficient validation of Session Description Protocol (SDP) messages. An attacker could exploit this vulnerability by sending a crafted SDP message to the CMS call bridge. An exploit could allow the attacker to cause the CMS to reload, causing a DoS condition for all connected clients. Versions prior to 2.3.9 are affected.
Weakness: CWE-20
Which versions are affected by CVE-2019-1676?
It affects 1 product.
Products include Cisco Meeting Server.
How do I fix CVE-2019-1676?
No fix has been published for CVE-2019-1676 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-1676 being exploited?
There is no known exploitation of CVE-2019-1676 in the wild and no public exploit code.
Other vulnerabilities in Cisco Meeting Server
- CVE-2016-6448 Memory corruption in Cisco Meeting Server before 2.0.3 and Acano Server before 1.9.5
- CVE-2017-12249 Misconfiguration in Cisco Meeting Server
- CVE-2016-6445 Auth bypass in Cisco Meeting Server (CMS) before 2.0.6 and Acano Server before 1.8.18 and 1.9.x before 1.9.6
- CVE-2018-0439 Cisco Meeting Server Cross-Site Request Forgery Vulnerability
- CVE-2016-6444 Cross-site request forgery in Cisco Meeting Server 1.8, 1.9, 2.0
Sources
Also known as GHSA-hpfq-w7vm-jxqp.