CVE-2021-1596 Cisco Video Surveillance 7000 Series IP Cameras Link Layer Discovery Protocol Memory Leak Vulnerabilities
Unauthenticated adjacent attackers can cause a denial of service on Cisco Video Surveillance IP cameras by sending crafted LLDP packets that trigger a memory leak.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-1596?
CVE-2021-1596 is a medium-severity denial of service vulnerability in Cisco Video Surveillance 7000 Series IP Cameras, published on 8 Jul 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Multiple vulnerabilities in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Video Surveillance 7000 Series IP Cameras could allow an unauthenticated, adjacent attacker to cause a memory leak, which could lead to a denial of service (DoS) condition on an affected device. These vulnerabilities are due to incorrect processing of certain LLDP packets at ingress time. An attacker could exploit these vulnerabilities by sending crafted LLDP packets to an affected device. A successful exploit could allow the attacker to cause the affected device to continuously consume memory, which could cause the device to crash and reload, resulting in a DoS condition. Note: LLDP is a Layer 2 protocol. To exploit these vulnerabilities, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).
Weakness: CWE-401
Which versions are affected by CVE-2021-1596?
It affects 2 products.
Products include Cisco Video Surveillance 7070 Firmware, Cisco Video Surveillance 7530pd Firmware.
How do I fix CVE-2021-1596?
No fix has been published for CVE-2021-1596 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-2021-1596 being exploited?
There is no known exploitation of CVE-2021-1596 in the wild and no public exploit code.
Other vulnerabilities in Cisco Video Surveillance 7000 Series IP Cameras
- CVE-2021-1595 Cisco Video Surveillance 7000 Series IP Cameras Link Layer Discovery Protocol Memory Leak Vulnerabilities
- CVE-2021-1597 Cisco Video Surveillance 7000 Series IP Cameras Link Layer Discovery Protocol Memory Leak Vulnerabilities
- CVE-2021-1598 Cisco Video Surveillance 7000 Series IP Cameras Link Layer Discovery Protocol Memory Leak Vulnerabilities
- CVE-2021-1563 Denial of service in Cisco Video Surveillance 7000 Series IP Cameras
- CVE-2021-1564 Denial of service in Cisco Video Surveillance 7000 Series IP Cameras
Sources
Also known as GHSA-qm56-9frh-42h4.