PT-2021-9658 · Zephyr · Zephyr

Zd3Z · Published 2021-05-24 · Updated 2022-04-26 · CVE-2020-13598

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Zephyr versions >= v1.14.2, >= v2.3.0

Description A buffer overflow issue occurs when Long File Names are enabled in FAT FS and the fs stat function is called, resulting in a stack-based buffer overflow.

Recommendations For Zephyr versions >= v1.14.2, >= v2.3.0, consider disabling the Long File Names feature in FAT FS until a patch is available. As a temporary workaround, restrict the use of the fs stat function to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Stack Overflow

Memory Corruption

Weakness Enumeration

CWE-121

CWE-787

Related Identifiers

CVE-2020-13598

GHSA-7FHV-RGXR-X56H

Affected Products

Zephyr

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2020-13598 · Security Note
• https://osv.dev/vulnerability/CVE-2020-13598 · Vendor Advisory
• http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7fhv-rgxr-x56h · Note
• https://t.me/cvenotify/15340 · Telegram Post