Device reload via crafted HostScan data
Published Nov 10, 2022 · Updated Aug 3, 2024
Improper HostScan processing in Cisco ASA and FTD Software allows remote attackers to reload affected devices and interrupt service. The Dynamic Access Policies functionality improperly processes crafted data received from the Posture module instead of safely rejecting it. Exploitation requires remote access SSL VPN, HostScan, and at least one custom DAP to be enabled; no authentication or user interaction is required.
Summary
What happened
Improper HostScan processing in Cisco ASA and FTD Software allows remote attackers to reload affected devices and interrupt service. The Dynamic Access Policies functionality improperly processes crafted data received from the Posture module instead of safely rejecting it. Exploitation requires remote access SSL VPN, HostScan, and at least one custom DAP to be enabled; no authentication or user interaction is required.
The record
- CVE
- CVE-2022-20947
- Published
- Nov 10, 2022
- Updated
- Aug 3, 2024
- Vendor
- ClamAV
- Product
- Cisco Adaptive Security Appliance (ASA) Software
- Classifications
- CWE-119, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 10, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=9.12.1.3
- Affected versionversion=9.17.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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