Vulnerability · Published Aug 23, 2023 · Assigned by cisco
CVE-2023-20168
High 7.1
In plain English
A high-severity buffer overflow in Cisco NX-OS 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 0.2% (higher than 15% of all known vulnerabilities).
Official description
A vulnerability in TACACS+ and RADIUS remote authentication for Cisco NX-OS Software could allow an unauthenticated, local attacker to cause an affected device to unexpectedly reload. This vulnerability is due to incorrect input validation when processing an authentication attempt if the directed request option is enabled for TACACS+ or RADIUS. An attacker could exploit this vulnerability by entering a crafted string at the login prompt of an affected device. A successful exploit could allow the attacker to cause the affected device to unexpectedly reload, resulting in a denial of service (DoS) condition.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco NX-OS Software | 4.2(1)SV1(4)4.2(1)SV1(4a)4.2(1)SV1(4b)4.2(1)SV1(5.1)4.2(1)SV1(5.1a)4.2(1)SV1(5.2)4.2(1)SV1(5.2b)4.2(1)SV2(1.1) |
Weakness: CWE-120 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H