Vulnerability Report

CVE-2021-21281

Title: Contiki-Ng Memory Corruption

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2021-21281.

CWE Category CWE-120
Published Date Jun 18, 2021
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 7.0 CVSS v3.1
Exploit Probability (EPSS)
0.44%

Vulnerability Summary

CVE-2021-21281: Contiki-NG is an open-source, cross-platform operating system for internet of things devices. A buffer overflow vulnerability exists in Contiki-NG versions prior to 4.6. After establishing a TCP socket using the tcp-socket library, it is possible for the remote end to send a packet with a data offset that is unvalidated. The problem has been patched in Contiki-NG 4.6. Users can apply the patch for this vulnerability out-of-band as a workaround.

Impacted Vendors

C
contiki-ng 1
C
contiki-ng_project 1

Reference Links

https://github.com/contiki-ng/contiki-ng/pull/1366 https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-mc42-fqfr-h9fp https://github.com/contiki-ng/contiki-ng/pull/1366 https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-mc42-fqfr-h9fp
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.0
Attack Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.8
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
Source Entity [email protected]
Severity HIGH
7.5
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-21281 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H

Affected Stack

No specific products linked.