Facebook Google Plus Twitter LinkedIn YouTube RSS Menu Search Resource - BlogResource - WebinarResource - ReportResource - Eventicons_066 icons_067icons_068icons_069icons_070

Qualcomm Atheros Universal WLAN Kernel Memory Disclosure

Medium

Synopsis

CVE-2019-10618: Kernel Memory Disclosure

Tenable has discovered vulnerabilities in Qualcomm Atheros Universal WLAN Driver Service affecting Qcamain10x64.sys version 12.0.0.910 and below. The vulnerability can allow a malicious low privileged user mode process to disclose kernel memory as well a sysem-wide Denial of Service (DoS). This is due to improper probe-for-read checks on buffers passed from user mode. The vulnerability can be observed by sending specific IOCTLs and buffers to the "ATH_WIFIDEV.00" device. 

The following 2 IOCTLs result in DoS (BSOD) if combined with NULL input buffers:

  • IOCTL_EVENT_OBJECT 0x220203 // Doesn't validate input buffer
  • IOCTL_PPDULOG_CMD 0x220207 // Doesn't validate input buffer

The following two IOCTLs can trigger kernel memory disclosure:

  • IOCTL_SET_POWER_LIMIT 0x22020B // Doesn't validate input buffer
  • IOCTL_GET_PCI_DATA 0x220043 // Doesn't validate input buffer

The kernel memory leak can be triggered by sending IOCTL_SET_POWER_LIMIT with an input buffer in kernel memory range. This will cause power level to be set to what ever is in that kernel memory buffer. This can be read back by an attacker using "get_tx_power" command via IOCTL of 0x220183. The same can be done using IOCTL_GET_PCI_DATA with a kernel memory input buffer.

Solution

Upgrade to Qualcomm Atheros Universal WLAN 12.0.0.926 or higher.

Proof of Concept

https://github.com/tenable/poc/blob/master/Qualcomm/Atheros/QcomWlanSrv/cve-2019-10618.cpp

Disclosure Timeline

8/16/2019 - Tenable discloses vulnerabilities to [email protected]
8/16/2019 - Qualcomm acknowledges report
8/29/2019 - Qualcomm verified vulnerabilities and rated issue as "Medium". Says internal teams are working on a fix.
9/16/2019 - Tenable acknowledges update.
9/16/2019 - Qualcomm assigns CVE-2019-10618 for the issue
9/18/2019 - Tenable notifies expected advisory release date
10/29/2019 - Tenable asks what version will have CVE-2019-10618 patches
11/5/2019 - Qualcomm notifies Tenable of fixed version release
11/5/2019 - Qualcomm notifies Tenable of public disclosure

All information within TRA advisories is provided “as is”, without warranty of any kind, including the implied warranties of merchantability and fitness for a particular purpose, and with no guarantee of completeness, accuracy, or timeliness. Individuals and organizations are responsible for assessing the impact of any actual or potential security vulnerability.

Tenable takes product security very seriously. If you believe you have found a vulnerability in one of our products, we ask that you please work with us to quickly resolve it in order to protect customers. Tenable believes in responding quickly to such reports, maintaining communication with researchers, and providing a solution in short order.

For more details on submitting vulnerability information, please see our Vulnerability Reporting Guidelines page.

If you have questions or corrections about this advisory, please email [email protected]

Try for Free Buy Now

Try Tenable.io

FREE FOR 30 DAYS

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy. Sign up now.

Buy Tenable.io

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy. Purchase your annual subscription today.

65 assets

$2,275

Buy Now

Try for Free Buy Now

Try Nessus Professional Free

FREE FOR 7 DAYS

Nessus® is the most comprehensive vulnerability scanner on the market today. Nessus Professional will help automate the vulnerability scanning process, save time in your compliance cycles and allow you to engage your IT team.

Buy Nessus Professional

Nessus® is the most comprehensive vulnerability scanner on the market today. Nessus Professional will help automate the vulnerability scanning process, save time in your compliance cycles and allow you to engage your IT team.

Buy a multi-year license and save. Add Advanced Support for access to phone, email, community and chat support 24 hours a day, 365 days a year. Full details here.

Try for Free Buy Now

Try Tenable.io Web Application Scanning

FREE FOR 30 DAYS

Enjoy full access to our latest web application scanning offering designed for modern applications as part of the Tenable.io platform. Safely scan your entire online portfolio for vulnerabilities with a high degree of accuracy without heavy manual effort or disruption to critical web applications. Sign up now.

Buy Tenable.io Web Application Scanning

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy. Purchase your annual subscription today.

5 FQDNs

$3,578

Buy Now

Try for Free Contact Sales

Try Tenable.io Container Security

FREE FOR 30 DAYS

Enjoy full access to the only container security offering integrated into a vulnerability management platform. Monitor container images for vulnerabilities, malware and policy violations. Integrate with continuous integration and continuous deployment (CI/CD) systems to support DevOps practices, strengthen security and support enterprise policy compliance.

Buy Tenable.io Container Security

Tenable.io Container Security seamlessly and securely enables DevOps processes by providing visibility into the security of container images – including vulnerabilities, malware and policy violations – through integration with the build process.

Learn More about Industrial Security

Get a Demo of Tenable.sc

Please fill out the form below with your contact information and a sales representative will contact you shortly to schedule a demo. You may also include a short comment (limited to 255 characters). Please note that fields with asterisks (*) are mandatory.

Try for Free Contact Sales

Try Tenable Lumin

FREE FOR 30 DAYS

Visualize and explore your Cyber Exposure, track risk reduction over time and benchmark against your peers with Tenable Lumin.

Buy Tenable Lumin

Contact a Sales Representative to see how Lumin can help you gain insight across your entire organization and manage cyber risk.