PT-2020-14074 · Contiki · Contiki-Ng

Mjurczak · Published 2020-08-18 · Updated 2020-08-25 · CVE-2020-14937

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Contiki-NG versions 4.4 through 4.5

Description A memory access issue was discovered in the SNMP BER encoder/decoder, where the length of provided input/output buffers is insufficiently verified during encoding and decoding of data. This may lead to out-of-bounds buffer read or write access in BER decoding and encoding functions.

Recommendations For Contiki-NG versions 4.4 through 4.5, as a temporary workaround, consider restricting the use of the SNMP BER encoder/decoder until a patch is available. Avoid using the affected functions for encoding and decoding data until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this issue.

Exploit

Fix

Out of bounds Read

Memory Corruption

Weakness Enumeration

CWE-125

CWE-787

Related Identifiers

CVE-2020-14937

Affected Products

Contiki-Ng

References · 4

• 🔥 https://github.com/contiki-ng/contiki-ng/issues/1354 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-14937 · Security Note
• https://osv.dev/vulnerability/CVE-2020-14937 · Vendor Advisory
• https://drive.google.com/file/d/1mAkJBVZNv5PMVwLojru0njH38zEXpWui/view?usp=sharing · Note