CVE-2023-20200

State: Published
Severity: 7.7 High
Published: Aug 23, 2023
Updated: Jul 1, 2025
Reserved: Oct 27, 2022

Description

A vulnerability in the Simple Network Management Protocol (SNMP) service of Cisco FXOS Software for Firepower 4100 Series and Firepower 9300 Security Appliances and of Cisco UCS 6300 Series Fabric Interconnects could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to the improper handling of specific SNMP requests. An attacker could exploit this vulnerability by sending a crafted SNMP request to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Note: This vulnerability affects all supported SNMP versions. To exploit this vulnerability through SNMPv2c or earlier, an attacker must know the SNMP community string that is configured on an affected device. To exploit this vulnerability through SNMPv3, the attacker must have valid credentials for an SNMP user who is configured on the affected device.

Scores

CVSS	Score	Vector	Source
3.1	7.7 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H	cisco

Weaknesses

CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')

Affected Products

Product	Versions
Cisco Unified Computing System (Managed)Cisco	3.1(1e)Affected 3.1(1g)Affected 3.1(1h)Affected 3.1(1k)Affected 3.1(1l)Affected 3.1(2b)Affected 3.1(2c)Affected 3.1(2e)Affected 3.1(2f)Affected 3.1(2g)Affected 3.1(2h)Affected 3.1(3a)Affected 3.1(3b)Affected 3.1(3c)Affected 3.1(3d)Affected 3.1(3e)Affected 3.1(3f)Affected 3.1(3h)Affected 3.1(3j)Affected 3.1(3k)Affected 3.1(2d)Affected 3.1(3l)Affected 3.2(1d)Affected 3.2(2b)Affected 3.2(2c)Affected and 69 more versions
Cisco Firepower Extensible Operating System (FXOS)Cisco	2.2.1.63Affected 2.2.1.66Affected 2.2.1.70Affected 2.2.2.17Affected 2.2.2.19Affected 2.2.2.24Affected 2.2.2.26Affected 2.2.2.28Affected 2.2.2.54Affected 2.2.2.60Affected 2.3.1.93Affected 2.3.1.91Affected 2.3.1.88Affected 2.3.1.75Affected 2.3.1.73Affected 2.3.1.66Affected 2.3.1.58Affected 2.3.1.56Affected

Product

Versions

Cisco Unified Computing System (Managed)Cisco

3.1(1e)Affected
3.1(1g)Affected
3.1(1h)Affected
3.1(1k)Affected
3.1(1l)Affected
3.1(2b)Affected
3.1(2c)Affected
3.1(2e)Affected
3.1(2f)Affected
3.1(2g)Affected
3.1(2h)Affected
3.1(3a)Affected
3.1(3b)Affected
3.1(3c)Affected
3.1(3d)Affected
3.1(3e)Affected
3.1(3f)Affected
3.1(3h)Affected
3.1(3j)Affected
3.1(3k)Affected
3.1(2d)Affected
3.1(3l)Affected
3.2(1d)Affected
3.2(2b)Affected
3.2(2c)Affected
and 69 more versions

Cisco Firepower Extensible Operating System (FXOS)Cisco

2.2.1.63Affected
2.2.1.66Affected
2.2.1.70Affected
2.2.2.17Affected
2.2.2.19Affected
2.2.2.24Affected
2.2.2.26Affected
2.2.2.28Affected
2.2.2.54Affected
2.2.2.60Affected
2.3.1.93Affected
2.3.1.91Affected
2.3.1.88Affected
2.3.1.75Affected
2.3.1.73Affected
2.3.1.66Affected
2.3.1.58Affected
2.3.1.56Affected

References

cisco-sa-fp-ucsfi-snmp-dos-qtv69NAO

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