CVE-2020-35634criticalCWE-129

CVE-2020-35634: critical vulnerability in CGAL Project

Published · Updated

28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 10epss 2.4%
exploitation probability
2.4%top 17% of all CVEs
observed exploitation
nono source reports it
In short

A vulnerability in CGAL's polygon parsing allows attackers to crash the program or run malicious code by providing a specially crafted file. The flaw occurs when the software reads polygon data without properly checking boundaries, leading to memory corruption.

Technical detail

An out-of-bounds read vulnerability exists in CGAL-5.1.1's Nef_S2/SNC_io_parser.h during polygon file parsing, specifically in the read_sface() function when processing boundary entry objects. A malformed input file can trigger memory access violations and type confusion, enabling arbitrary code execution; the attack vector is file-based with minimal pre-conditions (user must open the crafted file).

Summary generated and translated by AI from the official description.
A code execution vulnerability exists in the Nef polygon-parsing functionality of CGAL libcgal CGAL-5.1.1. An oob read vulnerability exists in Nef_S2/SNC_io_parser.h SNC_io_parser<EW>::read_sface() sfh->boundary_entry_objects Sloop_of. A specially crafted malformed file can lead to an out-of-bounds read and type confusion, which could lead to code execution. An attacker can provide malicious input to trigger this vulnerability.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected products
n/a · CGAL Project
References
https://lists.debian.org/debian-lts-announce/2022/12/msg00011.htmlhttps://security.gentoo.org/glsa/202305-34https://talosintelligence.com/vulnerability_reports/TALOS-2020-1225