CVE-2017-3792 Memory corruption in Cisco TelePresence Multipoint Control Unit (MCU) software version 4.3(1.68) or later configured for Passthrough content mode
Remote attackers can execute arbitrary code or cause denial of service via crafted IPv4/IPv6 fragments in Passthrough mode.
- 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-2017-3792?
CVE-2017-3792 is a critical memory corruption vulnerability in Cisco TelePresence Multipoint Control Unit (MCU) software version 4.3(1.68) or later configured for Passthrough content mode, published on 1 Feb 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-20
Which versions are affected by CVE-2017-3792?
It affects 1 product.
Products include Cisco Telepresence Mcu Software.
How do I fix CVE-2017-3792?
No fix has been published for CVE-2017-3792 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2017-3792 being exploited?
There is no known exploitation of CVE-2017-3792 in the wild and no public exploit code.
Other vulnerabilities in Cisco TelePresence Multipoint Control Unit (MCU) software version 4.3(1.68) or later configured for Passthrough content mode
Sources
Also known as GHSA-9fw8-cmw4-jgmg.