Improper input validation in Cisco Telepresence Mcu 4505
CVE-2017-3792
A vulnerability in a proprietary device driver in the kernel of Cisco TelePresence Multipoint Control Unit (MCU) Software could allow an unauthenticated, remote attacker to execute arbitrary code or cause a denial of service (DoS) condition. The vulnerability is due to improper size validation when reassembling fragmented IPv4 or IPv6 packets. An attacker could exploit this vulnerability by sending crafted IPv4 or IPv6 fragments to a port receiving content in Passthrough content mode. An exploit could allow the attacker to overflow a buffer. If successful, the attacker could execute arbitrary code or cause a DoS condition on the affected system. Cisco TelePresence MCU platforms TelePresence MCU 5300 Series, TelePresence MCU MSE 8510 and TelePresence MCU 4500 are affected when running software version 4.3(1.68) or later configured for Passthrough content mode. Cisco has released software updates that address this vulnerability. Workarounds that address this vulnerability are not available, but mitigations are available. Cisco Bug IDs: CSCuu67675.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.068 (93.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Cisco Telepresence_mcu_4505
- Cisco Telepresence_mcu_4510
- Cisco Telepresence_mcu_4515
- Cisco Telepresence_mcu_4520
- Cisco Telepresence_mcu_5310
- Cisco Telepresence_mcu_5320
- Cisco Telepresence_mcu_mse_8510
- Cisco Telepresence_mcu_software — versions 4.3_(2.32), 4.3_(2.30), 4.4_(3.67)
- N/a Cisco Telepresence Multipoint Control Unit (Mcu) Software Version 4.3(1.68) Or Later Configured For Passthrough Content Mode — versions Cisco TelePresence Multipoint Control Unit (MCU) software version 4.3(1.68) or later configured for Passthrough content mode
Weakness classification (CWE)
References
- psirt@cisco.com (x_refsource_CONFIRM, Vendor Advisory)
- psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- psirt@cisco.com (vdb-entry, x_refsource_SECTRACK)
Frequently asked questions
- What is CVE-2017-3792?
- CVE-2017-3792 is a critical-severity vulnerability in Cisco Telepresence Mcu 4505, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2017-02-01.
- How severe is CVE-2017-3792?
- Critical severity. CVSS v3 base score is 9.8 out of 10.