Vulnerability Monitor

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CVE-2022-20737

A vulnerability in the handler for HTTP authentication for resources accessed through the Clientless SSL VPN portal of Cisco Adaptive Security Appliance (ASA) Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device or to obtain portions of process memory from an affected device. This vulnerability is due to insufficient bounds checking when parsing specific HTTP authentication messages. An attacker could exploit this vulnerability by sending malicious traffic to an affected device acting as a VPN Gateway. To send this malicious traffic, an attacker would need to control a web server that can be accessed through the Clientless SSL VPN portal. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition, or to retrieve bytes from the device process memory that may contain sensitive information.

Published

2022-05-03T04:15:09.183

Last Modified

2024-11-21T06:43:26.900

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.5 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:S/C:P/I:N/A:C

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: SINGLE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: NONE
  • Availability Impact: COMPLETE
Exploitability Score

6.8

Impact Score

7.8

Weaknesses
  • Type: Secondary
    CWE-122
  • Type: Primary
    CWE-787
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco adaptive_security_appliance_software < 9.12.4.38 Yes
Operating System cisco adaptive_security_appliance_software < 9.14.4 Yes
Operating System cisco adaptive_security_appliance_software < 9.15.1.21 Yes
Operating System cisco adaptive_security_appliance_software < 9.16.2.14 Yes
Operating System cisco adaptive_security_appliance_software < 9.17.1.7 Yes
References