Vulnerability · Published Dec 22, 2021 · Assigned by talos

CVE-2021-40393

Critical 10.0

In plain English

A critical-severity memory corruption in Gerbv. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.1% (higher than 88% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.0)10.0Critical

Exploit odds (30 days)3.1%top 12.0% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

An out-of-bounds write vulnerability exists in the RS-274X aperture macro variables handling functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and the forked version of Gerbv (commit 71493260). A specially-crafted gerber file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	gerbv	2.8.2-1	DEBIAN-CVE-2021-40393
Debian:13	gerbv	2.8.2-1	DEBIAN-CVE-2021-40393

Affected products (as reported)

Vendor	Product	Versions
n/a	Gerbv	Gerbv 2.7.0, Gerbv dev (commit b5f1eacd),Gerbv forked dev (commit 71493260)

Weakness: CWE-119 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1404
DSA-5306 vendor-advisory
FEDORA-2023-5f5bea627b vendor-advisory
[debian-lts-announce] 20230930 [SECURITY] [DLA 3593-1] gerbv security update mailing-list