Vulnerability Details : CVE-2021-34734
A vulnerability in the Link Layer Discovery Protocol (LLDP) implementation for the Cisco Video Surveillance 7000 Series IP Cameras firmware could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper management of memory resources, referred to as a double free. An attacker could exploit this vulnerability by sending crafted LLDP packets to an affected device. A successful exploit could allow the attacker to cause the affected device to 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).
Vulnerability category: Memory CorruptionDenial of service
Exploit prediction scoring system (EPSS) score for CVE-2021-34734
Probability of exploitation activity in the next 30 days: 0.05%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 17 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-34734
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
---|---|---|---|---|---|
6.1
|
MEDIUM | AV:A/AC:L/Au:N/C:N/I:N/A:C |
6.5
|
6.9
|
[email protected] |
6.5
|
MEDIUM | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
[email protected] |
6.5
|
MEDIUM | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
[email protected] |
CWE ids for CVE-2021-34734
-
The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.Assigned by:
- [email protected] (Primary)
- [email protected] (Secondary)
References for CVE-2021-34734
Products affected by CVE-2021-34734
- cpe:2.3:o:cisco:video_surveillance_7000_ip_camera_firmware:2.12.4:*:*:*:*:*:*:*