Support for macOS is also in progress and will roll out soon. Figure 1. Figure 2. Threat and vulnerability management dedicated CVE dashboard. Figure 3. Threat and vulnerability management finds exposed paths. Figure 4. Threat and vulnerability management finds exposed devices based on vulnerable software and vulnerable files detected on disk. Note: Scan results may take some time to reach full coverage, and the number of discovered devices may be low at first but will grow as the scan reaches more devices.
A regularly updated list of vulnerable products can be viewed in the Microsoft Defender portal with matching recommendations. We will continue to review and update this list as new information becomes available. Through device discovery , unmanaged devices with products and services affected by the vulnerabilities are also surfaced so they can be onboarded and secured. Figure 5. Finding vulnerable applications and devices via software inventory. These new capabilities provide security teams with the following:.
To use this feature, open the Exposed devices tab in the dedicated CVE dashboard and review the Mitigation status column. Note that it may take a few hours for the updated mitigation status of a device to be reflected. The mitigation will be applied directly via the Microsoft Defender for Endpoint client. To view the mitigation options, click on the Mitigation options button in the Log4j dashboard :.
You can choose to apply the mitigation to all exposed devices or select specific devices for which you would like to apply it. To complete the process and apply the mitigation on devices, click Create mitigation action. Advance hunting can also surface affected software. This query looks for possibly vulnerable applications using the affected Log4j component. Triage the results to determine applications and programs that may need to be patched and updated. With Inventory tools, there are two ways to determine exposure across hybrid and multi-cloud resources:.
Figure 9. Searching vulnerability assessment findings by CVE identifier. Figure Searching software inventory by installed applications. For more information about how Microsoft Defender for Cloud finds machines affected by CVE, read this tech community post. Images are automatically scanned for vulnerabilities in three different use cases: when pushed to an Azure container registry, when pulled from an Azure container registry, and when container images are running on a Kubernetes cluster.
Additional information on supported scan triggers and Kubernetes clusters can be found here. Log4j binaries are discovered whether they are deployed via a package manager, copied to the image as stand-alone binaries, or included within a JAR Archive up to one level of nesting. We will continue to follow up on any additional developments and will update our detection capabilities if any additional vulnerabilities are reported.
To find vulnerable images across registries using the Azure portal, navigate to the Microsoft Defender for Cloud service under Azure Portal. Open the Container Registry images should have vulnerability findings resolved recommendation and search findings for the relevant CVEs. Finding images with the CVE vulnerability.
To view only vulnerable images that are currently running on a Kubernetes cluster using the Azure portal, navigate to the Microsoft Defender for Cloud service under Azure Portal. Open the Vulnerabilities in running container images should be remediated powered by Qualys recommendation and search findings for the relevant CVEs:. Finding running images with the CVE vulnerability.
Note: This recommendation requires clusters to run Microsoft Defender security profile to provide visibility on running images. Azure Resource Graph ARG provides instant access to resource information across cloud environments with robust filtering, grouping, and sorting capabilities. ARG provides another way to query resource data for resources found to be affected by the Log4j vulnerability.
The following query finds resources affected by the Log4j vulnerability across subscriptions. Use the additional data field across all returned results to obtain details on vulnerable resources:. Microsoft Sentinel customers can use the following detection query to look for devices that have applications with the vulnerability:. The latest one with links to previous articles can be found here. Both Community users and enterprise customers can search within the threat intelligence portal for data about potentially vulnerable components exposed to the Internet.
Leverage this method of exploration to aid in understanding the larger Internet exposure, while also filtering down to what may impact you. For a more automated method, registered users can view their attack surface to understand tailored findings associated with their organization.
Note, you must be registered with a corporate email and the automated attack surface will be limited. Digital Footprint customers can immediately understand what may be vulnerable and act swiftly and resolutely using the Attack Surface Intelligence Dashboard Log4J Insights tab. Microsoft Defender coordinates multiple security solutions that detect components of observed attacks taking advantage of this vulnerability, from exploitation attempts to remote code execution and post-exploitation activity.
Microsoft Defender solutions protect against related threats. Customers can click Need help? Turn on cloud-delivered protection in Microsoft Defender Antivirus to cover rapidly evolving attacker tools and techniques.
Cloud-based machine learning protections block the majority of new and unknown variants. Microsoft Defender Antivirus detects components and behaviors related to this threat as the following detection names:. Users of Microsoft Defender for Endpoint can turn on the following attack surface reduction rule to block or audit some observed activity associated with this threat.
Due to the broad network exploitation nature of vectors through which this vulnerability can be exploited and the fact that applying mitigations holistically across large environments will take time, we encourage defenders to look for signs of post-exploitation rather than fully relying on prevention. Observed post exploitation activity such as coin mining, lateral movement, and Cobalt Strike are detected with behavior-based detections. Alerts with the following titles in the Security Center indicate threat activity related to exploitation of the Log4j vulnerability on your network and should be immediately investigated and remediated.
These alerts are supported on both Windows and Linux platforms:. The following alerts detect activities that have been observed in attacks that utilize at least one of the Log4j vulnerabilities. However, these alerts can also indicate activity that is not related to the vulnerability. We are listing them here, as it is highly recommended that they are triaged and remediated immediately given their severity and the potential that they could be related to Log4j exploitation:.
Some of the alerts mentioned above utilize the enhanced network inspection capabilities in Microsoft Defender for Endpoint. These alerts correlate several network and endpoint signals into high-confidence detection of successful exploitation, as well as providing detailed evidence artifacts valuable for triage and investigation of detected activities. Example detection leveraging network inspection provides details about the Java class returned following successful exploitation.
Microsoft Defender detects exploitation patterns in different data sources, including cloud application traffic reported by Microsoft Defender for Cloud Apps. The following alert surfaces exploitation attempts via cloud applications that use vulnerable Log4j components:. To add a layer of protection against exploits that may be delivered via email, Microsoft Defender for Office flags suspicious emails e.
We also added the following new alert, which detects attempts to exploit CVE through email headers:. Sample alert on malicious sender display name found in email correspondence. This detection looks for exploitation attempts in email headers, such as the sender display name, sender, and recipient addresses. The alert covers known obfuscation attempts that have been observed in the wild. If this alert is surfaced, customers are recommended to evaluate the source address, email subject, and file attachments to get more context regarding the authenticity of the email.
Sample email event surfaced via advanced hunting. Sharing information through the Security Update Guide is an important part of our ongoing effort to help customers manage security risks and keep systems protected. Based on your feedback we have been working to make signing up for and receiving Security Update Guide notifications easier.
We are excited to share that starting today, you can …. MSRC was informed by Wiz. This, when combined with an application configured to serve static content, makes it possible …. Researcher Spotlight: Dr. Published on: Dec 11, updated Dec Currently, Microsoft is not aware of any impact, outside of the initial disclosure involving Minecraft: Java Edition, to the ….
Microsoft Technical Security Notification Services Microsoft's free monthly Security Notification Service provides links to security-related software updates and notification of re-released security updates.
Can I sign up for security notifications with my work e-mail? Where can I find the status of known issues? Will the Security Update Guide be released in languages other than English?
Will Microsoft continue to publish acknowledgements of the researchers who reported a vulnerability? Will Microsoft continue to provide notification for out-of-band security update releases? What is this format and where can I get more information about it? I have suggestions for how to improve the portal. Where should I send them? How can I group related security updates? How can I assess the criticality of security updates? To help customers understand the risk associated with each vulnerability, Microsoft provides the following data on the Security Update Guide : Impact : security threats of the vulnerability.
Severity : Maximum potential impact of the attack. Exploited : Marked YES when the vulnerability has been exploited before the release of the security update.
Microsoft Exploitability Index : Potential exploitability of each vulnerability of Important or Critical severity associated with a Microsoft security update.
How can I deploy security updates? Windows Update and Microsoft Update Security Updates are generally categorized as Important and will be downloaded and installed automatically.
Microsoft Update Catalog To get the standalone package for security update, go to the Microsoft Update Catalog website. Learn more about the servicing model of Windows at: Windows 10 update servicing cadence Simplifying updates for Windows 7 and 8.
How can I troubleshoot issues with security updates?
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