Vulnerability · Published Nov 18, 2024 · Assigned by cisco
CVE-2021-1285Multiple Cisco Products SNORT Ethernet Frame Decoder Denial of Service Vulnerability
High 7.4
In plain English
A high-severity resource allocation without limits in Cisco UTD SNORT IPS Engine Software from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.9% (higher than 87% of all known vulnerabilities).
Official description
Multiple Cisco products are affected by a vulnerability in the Ethernet Frame Decoder of the Snort detection engine that could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper handling of error conditions when processing Ethernet frames. An attacker could exploit this vulnerability by sending malicious Ethernet frames through an affected device. A successful exploit could allow the attacker to exhaust disk space on the affected device, which could result in administrators being unable to log in to the device or the device being unable to boot up correctly.Note: Manual intervention is required to recover from this situation. Customers are advised to contact the Cisco Technical Assistance Center (TAC) to help recover a device in this condition.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco UTD SNORT IPS Engine Software | 16.12.3Fuji-16.9.516.12.417.3.1a16.6.616.12.2Fuji-16.9.6Fuji-16.9.3 |
Weakness: CWE-770 · Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:X/RL:X/RC:X