Out-of-bounds Write Affecting zephyrproject-rtos/zephyr package, versions [,3.7.0-rc2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UNMANAGED-ZEPHYRPROJECTRTOSZEPHYR-8165332
- published8 Oct 2024
- disclosed4 Oct 2024
- creditekleezg
Introduced: 4 Oct 2024
CVE-2024-6442 (opens in a new tab)How to fix?
Upgrade zephyrproject-rtos/zephyr to version 3.7.0-rc2 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Write through the ascs_cp_rsp_add function due to an unchecked tailroom. An attacker can cause a buffer overflow and potentially execute arbitrary code or disrupt service by sending crafted input that exceeds the buffer limits.
PoC
Set the
CONFIG_BT_L2CAP_TX_MTUparameter to 253, which is the default value as defined in autoconf.h.Set the
num_asesin thereqto a value greater than 85, ensuring that the resulting size exceeds the capacity ofrsp_buf, since 85×3>253.