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This article covers recent vulnerabilities found to be actively exploited. They are categorised based not only on the category of exploitation, but their impact, and versions affected. This article also informs on any official fix and remediation guidance for the listed vulnerabilities.
Category: Command Injection
(Cloud NGFW, Panorama appliances, and Prisma Access are not impacted by this vulnerability. All other versions of PAN-OS are also not impacted.)
A command injection vulnerability exists in the GlobalProtect feature of Palo Alto Networks PAN-OS software with the configurations for both GlobalProtect gateway and device telemetry enabled. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This could allow attackers to execute unexpected, dangerous commands directly on the operating system. This weakness can lead to a vulnerability in environments in which the attacker does not have direct access to the operating system, such as in web applications. Alternately, if the weakness occurs in a privileged program, it could allow the attacker to specify commands that normally would not be accessible, or to call alternate commands with privileges that the attacker does not have. The problem is exacerbated if the compromised process does not follow the principle of least privilege, because the attacker-controlled commands may run with special system privileges that increases the amount of damage.
NOTE: Remediation of this vulnerability by patching to a specific version indicated may not be sufficient to secure the product against further vulnerabilities discovered in later versions, subsequent to the publication of this guidance. Unless contra-indicated, customers are therefore advised to always upgrade to the latest version of the product available.
Category: Dynamic Loading & Untrusted Search Path
Affected Products (Desktop Operating Systems):
Affected Products (Server Operating Systems):
Affected Products (Mobile Operating Systems):
A security issue has been identified in the Microsoft Windows Print Spooler component. An attacker can modify a JavaScript constraints file and execute it with SYSTEM-level permissions. The vulnerability is believed to potentially relate to improper sanitisation and normalization of filenames to pass in arbitrary (malicious) libraries via DLL injection.
The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product’s direct control. This might allow attackers to execute their own programs, access unauthorized data files, or modify configuration in unexpected ways. If the product uses a search path to locate critical resources such as programs, then an attacker could modify that search path to point to a malicious program, which the targeted product would then execute.
This component has previously been the target of similar vulnerabilities known as “PrintNightmare”, in related CVE ID reference CVE-2021-34527.
Anyone administering Windows machines should ensure that the fix for CVE-2022-38028 has been installed, as well as the fix for CVE-2021-34527, the tracking designation for a previous critical zero-day that came under mass attack in 2021.
Microsoft released a security update for the Print Spooler vulnerability exploited by GooseEgg on October 11, 2022 – see https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-38028. Customers who have not implemented these fixes yet are urged to do so as soon as possible for their organization’s security.
NOTE: Remediation of this vulnerability by patching to a specific version indicated may not be sufficient to secure the product against further vulnerabilities discovered in later versions, subsequent to the publication of this guidance. Unless contra-indicated, customers are therefore advised to always upgrade to the latest version of the product available.
Category: Privilege Escalation
A vulnerability in a legacy capability that allowed for the preloading of VPN clients and plug-ins and that has been available in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to execute arbitrary code with root-level privileges. Administrator-level privileges are required to exploit this vulnerability.
This vulnerability is due to improper validation of a file when it is read from system flash memory. An attacker could exploit this vulnerability by copying a crafted file to the disk0: file system of an affected device.
Cisco has released software updates that address this vulnerability. Customers are advised to upgrade to the latest version of the impacted product.
To upgrade to a fixed release of Cisco FTD Software, customers can do one of the following:
NOTE: Remediation of this vulnerability by patching to a specific version indicated may not be sufficient to secure the product against further vulnerabilities discovered in later versions, subsequent to the publication of this guidance. Unless contra-indicated, customers are therefore advised to always upgrade to the latest version of the product available.
Category: Denial of Service (DOS)
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an infinite loop vulnerability. This vulnerability is due to incomplete error checking when parsing an HTTP header. An attacker could exploit this vulnerability by sending a crafted HTTP request to a targeted web server on a device.
Cisco has released software updates that address this vulnerability. Customers are advised to upgrade to the latest version of the impacted product.
To upgrade to a fixed release of Cisco FTD Software, customers can do one of the following:
NOTE: Remediation of this vulnerability by patching to a specific version indicated may not be sufficient to secure the product against further vulnerabilities discovered in later versions, subsequent to the publication of this guidance. Unless contra-indicated, customers are therefore advised to always upgrade to the latest version of the product available.
AppCheck is a software security vendor based in the UK, offering a leading security scanning platform that automates the discovery of security flaws within organisations websites, applications, network, and cloud infrastructure. AppCheck are authorized by the Common Vulnerabilities and Exposures (CVE) Program as a CVE Numbering Authority (CNA).
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