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CVE-2024-20526

Oct. 31, 2024, 1:08 a.m.

CVSS Score

5.3 / 10

Products Impacted

Vendor Product Versions
cisco
  • adaptive_security_appliance_software
  • 9.16.4.67, 9.16.4.70, 9.18.4.40, 9.20.3

Description

A vulnerability in the SSH server of Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition for the SSH server of an affected device. This vulnerability is due to a logic error when an SSH session is established. An attacker could exploit this vulnerability by sending crafted SSH messages to an affected device. A successful exploit could allow the attacker to exhaust available SSH resources on the affected device so that new SSH connections to the device are denied, resulting in a DoS condition. Existing SSH connections to the device would continue to function normally. The device must be rebooted manually to recover. However, user traffic would not be impacted and could be managed using a remote application such as Cisco Adaptive Security Device Manager (ASDM).

Weaknesses

CWE-400
Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

CWE ID: 400
CWE-770
Allocation of Resources Without Limits or Throttling

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

CWE ID: 770

Date

Published: Oct. 23, 2024, 6:15 p.m.

Last Modified: Oct. 31, 2024, 1:08 a.m.

Status : Analyzed

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

ykramarz@cisco.com

CPEs

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
o cisco adaptive_security_appliance_software 9.16.4.67 / / / / / / /
o cisco adaptive_security_appliance_software 9.16.4.70 / / / / / / /
o cisco adaptive_security_appliance_software 9.18.4.40 / / / / / / /
o cisco adaptive_security_appliance_software 9.20.3 / / / / / / /

CVSS Data

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

Base Score
5.3
Exploitability Score
3.9
Impact Score
1.4
Base Severity
MEDIUM
CVSS Vector String

The CVSS vector string provides an in-depth view of the vulnerability metrics.

View Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References