Denial of service in Cisco Expressway Series and TelePresence Video Communication Server
| Risk | Medium |
| Patch available | NO |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-3596 |
| CWE-ID | CWE-789 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Cisco Expressway Server applications / Conferencing, Collaboration and VoIP solutions Cisco TelePresence Video Communication Server Server applications / Other server solutions |
| Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Uncontrolled Memory Allocation
EUVDB-ID: #VU47528
Risk: Medium
CVSSv3.1: 5.4 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C]
CVE-ID: CVE-2020-3596
CWE-ID:
CWE-789 - Uncontrolled Memory Allocation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect handling of incoming Session Initiation Protocol (SIP) traffic. A remote attacker can send a series of SIP packets and cause a DoS condition.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsCisco Expressway: X12.6.3
Cisco TelePresence Video Communication Server: X12.6.3
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
