CVE-2020-24338

CRITICAL

picoTCP < 1.7.0 - Out-of-bounds Write in DNS Domain Name Record Decompression

Title source: llm
STIX 2.1

Description

An issue was discovered in picoTCP through 1.7.0. The DNS domain name record decompression functionality in pico_dns_decompress_name() in pico_dns_common.c does not validate the compression pointer offset values with respect to the actual data present in a DNS response packet, causing out-of-bounds writes that lead to Denial-of-Service and Remote Code Execution.

References (2)

Core 2
Core References
Third Party Advisory, US Government Resource x_refsource_misc
https://www.kb.cert.org/vuls/id/815128
Third Party Advisory, US Government Resource x_refsource_misc
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01

Scores

CVSS v3 9.8
EPSS 0.3594
EPSS Percentile 98.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-787
Status published
Products (1)
altran/picotcp < 1.7.0
Published Dec 11, 2020
Tracked Since Feb 18, 2026