CVE-2020-17441: altran picotcp Out-of-bounds Read

Vulnerability summary

CVE-2020-17441 is a critical (CVSS 9.1) Out-of-bounds Read vulnerability in altran picotcp. EPSS estimates a 7.00% chance of exploitation in the next 30 days, higher than 94.1% of scored vulnerabilities.

Timeline

1. 11-12-2020
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

An issue was discovered in picoTCP 1.7.0. The code for processing the IPv6 headers does not validate whether the IPv6 payload length field is equal to the actual size of the payload, which leads to an Out-of-Bounds read during the ICMPv6 checksum calculation, resulting in either Denial-of-Service or Information Disclosure. This affects pico_ipv6_extension_headers and pico_checksum_adder (in pico_ipv6.c and pico_frame.c).

• CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.