Zephyr
CVE-2020-10067
HIGH
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Integer overflow checks
MITRE ATT&CK
1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 7.8 (HIGH). Attack characteristics: local attack vector, low complexity, low privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A local attacker with access to the system could cause unexpected behavior through arithmetic overflow. |
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Alert meAnalysisAI
A malicious userspace application can cause a integer overflow and bypass security checks performed by system call handlers. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Validate arithmetic operations, use safe integer libraries, check bounds before allocation.
Affects your stack
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Technical ContextAI · show details
This vulnerability is classified as Integer Overflow (CWE-190), which allows attackers to cause unexpected behavior through arithmetic overflow. A malicious userspace application can cause a integer overflow and bypass security checks performed by system call handlers. The impact would depend on the underlying system call and can range from denial of service to information leak to memory corruption resulting in code execution within the kernel. See NCC-ZEP-005 This issue affects: zephyrproject-rtos zephyr version 1.14.1 and later versions. version 2.1.0 and later versions. Affected products include: Zephyrproject Zephyr. Version information: version 1.14.1.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
A malicious userspace application can cause a integer overflow and bypass security checks performed by system call handlers. The impact would depend on the underlying system call and can range from denial of service to information leak to memory corruption resulting in code execution within the kernel. See NCC-ZEP-005 This issue affects: zephyrproject-rtos zephyr version 1.14.1 and later versions. version 2.1.0 and later versions.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
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What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
Integer overflow occurs when an arithmetic operation produces a result that exceeds the maximum value a given integer type can store.
Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)NVD
Potential off-by-one buffer overflow vulnerability in the Zephyr fuse file system. Rated critical severity (CVSS 10.0),
An out-of-bounds write in the Zephyr RTOS DNS resolver (dns_unpack_name()) lets a crafted DNS response corrupt memory on
Possible variant of CVE-2021-3434 in function le_ecred_reconf_req. Rated critical severity (CVSS 9.8), this vulnerabilit
Unchecked user input length in /subsys/net/l2/wifi/wifi_shell.c can cause buffer overflows. Rated critical severity (CVS
Potential buffer overflow vulnerability in the Zephyr CAN bus subsystem. Rated critical severity (CVSS 9.8), this vulner
Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr. Rated critical severity (CVSS 9.8), this vulnerability
Buffer overflow in Zephyr USB DFU DNLOAD. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable
DOS: Incorrect 802154 Frame Validation for Omitted Source / Dest Addresses. Rated critical severity (CVSS 9.8), this vul
zephyr-rtos version 1.12.0 contains a NULL base pointer reference vulnerability in sys_ring_buf_put(), sys_ring_buf_get(
Potential buffer overflow vulnerabilities n the Zephyr Bluetooth subsystem. Rated critical severity (CVSS 9.6), this vul
The documentation specifies that the BT_GATT_PERM_READ_LESC and BT_GATT_PERM_WRITE_LESC defines for a Bluetooth characte
Potential buffer overflows in the Bluetooth subsystem due to asserts being disabled in /subsys/bluetooth/host/hci_core.c
Exploit-DB